Changeset 21644

Timestamp:

08/28/2012 05:24:33 PM (11 years ago)

Author:

nacin

Message:

Update to SimplePie 1.3. props rmccue.

Uses individual files for each class. We now conditionally load only the pieces
we need, resulting in less memory usage. Also easier to maintain now that it is
not a single 387KB file.

fixes #21183.

Location:

trunk/wp-includes

Files:

• SimplePie (added)
• SimplePie/Author.php (added)
• SimplePie/Cache (added)
• SimplePie/Cache.php (added)
• SimplePie/Cache/Base.php (added)
• SimplePie/Cache/DB.php (added)
• SimplePie/Cache/File.php (added)
• SimplePie/Cache/Memcache.php (added)
• SimplePie/Cache/MySQL.php (added)
• SimplePie/Caption.php (added)
• SimplePie/Category.php (added)
• SimplePie/Content (added)
• SimplePie/Content/Type (added)
• SimplePie/Content/Type/Sniffer.php (added)
• SimplePie/Copyright.php (added)
• SimplePie/Core.php (added)
• SimplePie/Credit.php (added)
• SimplePie/Decode (added)
• SimplePie/Decode/HTML (added)
• SimplePie/Decode/HTML/Entities.php (added)
• SimplePie/Enclosure.php (added)
• SimplePie/File.php (added)
• SimplePie/HTTP (added)
• SimplePie/HTTP/Parser.php (added)
• SimplePie/IRI.php (added)
• SimplePie/Item.php (added)
• SimplePie/Locator.php (added)
• SimplePie/Misc.php (added)
• SimplePie/Net (added)
• SimplePie/Net/IPv6.php (added)
• SimplePie/Parse (added)
• SimplePie/Parse/Date.php (added)
• SimplePie/Parser.php (added)
• SimplePie/Rating.php (added)
• SimplePie/Registry.php (added)
• SimplePie/Restriction.php (added)
• SimplePie/Sanitize.php (added)
• SimplePie/Source.php (added)
• SimplePie/XML (added)
• SimplePie/XML/Declaration (added)
• SimplePie/XML/Declaration/Parser.php (added)
• SimplePie/gzdecode.php (added)
• class-feed.php (modified) (1 diff)
• class-simplepie.php (modified) (109 diffs)

trunk/wp-includes/class-feed.php

@@ -11 +11 @@
      * @access public
      */
-    function create($location, $filename, $extension) {
+    public static function create($location, $filename, $extension) {
         return new WP_Feed_Cache_Transient($location, $filename, $extension);
     }

trunk/wp-includes/class-simplepie.php

@@ -1 +1 @@
 <?php
 if ( ! class_exists( 'SimplePie' ) ) :
+
+// Load classes we will need.
+require ABSPATH . WPINC . '/SimplePie/Misc.php';
+require ABSPATH . WPINC . '/SimplePie/Cache.php';
+require ABSPATH . WPINC . '/SimplePie/File.php';
+require ABSPATH . WPINC . '/SimplePie/Sanitize.php';
+require ABSPATH . WPINC . '/SimplePie/Registry.php';
+require ABSPATH . WPINC . '/SimplePie/IRI.php';
+require ABSPATH . WPINC . '/SimplePie/Locator.php';
+require ABSPATH . WPINC . '/SimplePie/Content/Type/Sniffer.php';
+require ABSPATH . WPINC . '/SimplePie/XML/Declaration/Parser.php';
+require ABSPATH . WPINC . '/SimplePie/Parser.php';
+require ABSPATH . WPINC . '/SimplePie/Item.php';
+require ABSPATH . WPINC . '/SimplePie/Parse/Date.php';
+require ABSPATH . WPINC . '/SimplePie/Author.php';
+
+/**
+ * WordPress autoloader for SimplePie.
+ *
+ * @since 3.5.0
+ */
+function wp_simplepie_autoload( $class ) {
+    if ( 0 !== strpos( $class, 'SimplePie_' ) )
+        return;
+
+    $file = dirname( __FILE__ ) . '/' . str_replace( '_', '/', $class ) . '.php';
+    include $file;
+}
+
+if ( function_exists( 'spl_autoload_register' ) ) {
+    /**
+     * We autoload classes we may not need.
+     *
+     * If SPL is disabled, we load all of SimplePie manually.
+     *
+     * Core.php is not loaded manually, because SimplePie_Core (a deprecated class)
+     * was never included in WordPress core.
+     */
+    spl_autoload_register( 'wp_simplepie_autoload' );
+} else {
+    require ABSPATH . WPINC . '/SimplePie/Cache/Base.php';
+    require ABSPATH . WPINC . '/SimplePie/Cache/DB.php';
+    require ABSPATH . WPINC . '/SimplePie/Cache/File.php';
+    require ABSPATH . WPINC . '/SimplePie/Cache/Memcache.php';
+    require ABSPATH . WPINC . '/SimplePie/Cache/MySQL.php';
+    require ABSPATH . WPINC . '/SimplePie/Caption.php';
+    require ABSPATH . WPINC . '/SimplePie/Category.php';
+    require ABSPATH . WPINC . '/SimplePie/Copyright.php';
+    require ABSPATH . WPINC . '/SimplePie/Credit.php';
+    require ABSPATH . WPINC . '/SimplePie/Decode/HTML/Entities.php';
+    require ABSPATH . WPINC . '/SimplePie/Enclosure.php';
+    require ABSPATH . WPINC . '/SimplePie/gzdecode.php';
+    require ABSPATH . WPINC . '/SimplePie/HTTP/Parser.php';
+    require ABSPATH . WPINC . '/SimplePie/Net/IPv6.php';
+    require ABSPATH . WPINC . '/SimplePie/Rating.php';
+    require ABSPATH . WPINC . '/SimplePie/Restriction.php';
+    require ABSPATH . WPINC . '/SimplePie/Source.php';
+}
+
 /**
  * SimplePie
@@ -7 +66 @@
  * Takes the hard work out of managing a complete RSS/Atom solution.
  *
- * Copyright (c) 2004-2011, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
+ * Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
  * All rights reserved.
  *
@@ -35 +94 @@
  *
  * @package SimplePie
- * @version 1.2.1
- * @copyright 2004-2011 Ryan Parman, Geoffrey Sneddon, Ryan McCue
+ * @version 1.3
+ * @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
  * @author Ryan Parman
  * @author Geoffrey Sneddon
  * @author Ryan McCue
  * @link http://simplepie.org/ SimplePie
- * @link http://simplepie.org/support/ Please submit all bug reports and feature requests to the SimplePie forums
  * @license http://www.opensource.org/licenses/bsd-license.php BSD License
- * @todo phpDoc comments
  */
 
@@ -54 +111 @@
  * SimplePie Version
  */
-define('SIMPLEPIE_VERSION', '1.2.1');
+define('SIMPLEPIE_VERSION', '1.3');
 
 /**
  * SimplePie Build
- */
-define('SIMPLEPIE_BUILD', '20111015034325');
+ * @todo Hardcode for release (there's no need to have to call SimplePie_Misc::get_build() only every load of simplepie.inc)
+ */
+define('SIMPLEPIE_BUILD', gmdate('YmdHis', SimplePie_Misc::get_build()));
 
 /**
@@ -336 +394 @@
 
 /**
- * Wrong Media RSS Namespace
+ * Wrong Media RSS Namespace. Caused by a long-standing typo in the spec.
  */
 define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG', 'http://search.yahoo.com/mrss');
 
 /**
+ * Wrong Media RSS Namespace #2. New namespace introduced in Media RSS 1.5.
+ */
+define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2', 'http://video.search.yahoo.com/mrss');
+
+/**
+ * Wrong Media RSS Namespace #3. A possible typo of the Media RSS 1.5 namespace.
+ */
+define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG3', 'http://video.search.yahoo.com/mrss/');
+
+/**
+ * Wrong Media RSS Namespace #4. New spec location after the RSS Advisory Board takes it over, but not a valid namespace.
+ */
+define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4', 'http://www.rssboard.org/media-rss');
+
+/**
+ * Wrong Media RSS Namespace #5. A possible typo of the RSS Advisory Board URL.
+ */
+define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5', 'http://www.rssboard.org/media-rss/');
+
+/**
  * iTunes RSS Namespace
  */
@@ -356 +434 @@
 
 /**
- * Whether we're running on PHP5
- */
-define('SIMPLEPIE_PHP5', version_compare(PHP_VERSION, '5.0.0', '>='));
-
-/**
  * No file source
  */
@@ -389 +462 @@
  */
 define('SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS', 16);
+
+
 
 /**
@@ -394 +469 @@
  *
  * @package SimplePie
+ * @subpackage API
  */
 class SimplePie
@@ -401 +477 @@
      * @access private
      */
-    var $data = array();
+    public $data = array();
 
     /**
@@ -407 +483 @@
      * @access private
      */
-    var $error;
+    public $error;
 
     /**
@@ -414 +490 @@
      * @access private
      */
-    var $sanitize;
+    public $sanitize;
 
     /**
@@ -421 +497 @@
      * @access private
      */
-    var $useragent = SIMPLEPIE_USERAGENT;
+    public $useragent = SIMPLEPIE_USERAGENT;
 
     /**
@@ -428 +504 @@
      * @access private
      */
-    var $feed_url;
+    public $feed_url;
 
     /**
@@ -435 +511 @@
      * @access private
      */
-    var $file;
+    public $file;
 
     /**
@@ -442 +518 @@
      * @access private
      */
-    var $raw_data;
+    public $raw_data;
 
     /**
@@ -449 +525 @@
      * @access private
      */
-    var $timeout = 10;
+    public $timeout = 10;
 
     /**
@@ -457 +533 @@
      * @access private
      */
-    var $force_fsockopen = false;
+    public $force_fsockopen = false;
 
     /**
@@ -465 +541 @@
      * @access private
      */
-    var $force_feed = false;
-
-    /**
-     * @var bool Enable/Disable XML dump
-     * @see SimplePie::enable_xml_dump()
-     * @access private
-     */
-    var $xml_dump = false;
+    public $force_feed = false;
 
     /**
@@ -479 +548 @@
      * @access private
      */
-    var $cache = true;
+    public $cache = true;
 
     /**
@@ -486 +555 @@
      * @access private
      */
-    var $cache_duration = 3600;
+    public $cache_duration = 3600;
 
     /**
@@ -493 +562 @@
      * @access private
      */
-    var $autodiscovery_cache_duration = 604800; // 7 Days.
+    public $autodiscovery_cache_duration = 604800; // 7 Days.
 
     /**
@@ -500 +569 @@
      * @access private
      */
-    var $cache_location = './cache';
+    public $cache_location = './cache';
 
     /**
@@ -507 +576 @@
      * @access private
      */
-    var $cache_name_function = 'md5';
+    public $cache_name_function = 'md5';
 
     /**
@@ -514 +583 @@
      * @access private
      */
-    var $order_by_date = true;
+    public $order_by_date = true;
 
     /**
@@ -522 +591 @@
      * @access private
      */
-    var $input_encoding = false;
+    public $input_encoding = false;
 
     /**
@@ -529 +598 @@
      * @access private
      */
-    var $autodiscovery = SIMPLEPIE_LOCATOR_ALL;
-
-    /**
-     * @var string Class used for caching feeds
-     * @see SimplePie::set_cache_class()
-     * @access private
-     */
-    var $cache_class = 'SimplePie_Cache';
-
-    /**
-     * @var string Class used for locating feeds
-     * @see SimplePie::set_locator_class()
-     * @access private
-     */
-    var $locator_class = 'SimplePie_Locator';
-
-    /**
-     * @var string Class used for parsing feeds
-     * @see SimplePie::set_parser_class()
-     * @access private
-     */
-    var $parser_class = 'SimplePie_Parser';
-
-    /**
-     * @var string Class used for fetching feeds
-     * @see SimplePie::set_file_class()
-     * @access private
-     */
-    var $file_class = 'SimplePie_File';
-
-    /**
-     * @var string Class used for items
-     * @see SimplePie::set_item_class()
-     * @access private
-     */
-    var $item_class = 'SimplePie_Item';
-
-    /**
-     * @var string Class used for authors
-     * @see SimplePie::set_author_class()
-     * @access private
-     */
-    var $author_class = 'SimplePie_Author';
-
-    /**
-     * @var string Class used for categories
-     * @see SimplePie::set_category_class()
-     * @access private
-     */
-    var $category_class = 'SimplePie_Category';
-
-    /**
-     * @var string Class used for enclosures
-     * @see SimplePie::set_enclosures_class()
-     * @access private
-     */
-    var $enclosure_class = 'SimplePie_Enclosure';
-
-    /**
-     * @var string Class used for Media RSS <media:text> captions
-     * @see SimplePie::set_caption_class()
-     * @access private
-     */
-    var $caption_class = 'SimplePie_Caption';
-
-    /**
-     * @var string Class used for Media RSS <media:copyright>
-     * @see SimplePie::set_copyright_class()
-     * @access private
-     */
-    var $copyright_class = 'SimplePie_Copyright';
-
-    /**
-     * @var string Class used for Media RSS <media:credit>
-     * @see SimplePie::set_credit_class()
-     * @access private
-     */
-    var $credit_class = 'SimplePie_Credit';
-
-    /**
-     * @var string Class used for Media RSS <media:rating>
-     * @see SimplePie::set_rating_class()
-     * @access private
-     */
-    var $rating_class = 'SimplePie_Rating';
-
-    /**
-     * @var string Class used for Media RSS <media:restriction>
-     * @see SimplePie::set_restriction_class()
-     * @access private
-     */
-    var $restriction_class = 'SimplePie_Restriction';
-
-    /**
-     * @var string Class used for content-type sniffing
-     * @see SimplePie::set_content_type_sniffer_class()
-     * @access private
-     */
-    var $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer';
-
-    /**
-     * @var string Class used for item sources.
-     * @see SimplePie::set_source_class()
-     * @access private
-     */
-    var $source_class = 'SimplePie_Source';
-
-    /**
-     * @var mixed Set javascript query string parameter (false, or
-     * anything type-cast to false, disables this feature)
-     * @see SimplePie::set_javascript()
-     * @access private
-     */
-    var $javascript = 'js';
+    public $autodiscovery = SIMPLEPIE_LOCATOR_ALL;
+
+    /**
+     * Class registry object
+     *
+     * @var SimplePie_Registry
+     */
+    public $registry;
 
     /**
@@ -649 +612 @@
      * @access private
      */
-    var $max_checked_feeds = 10;
+    public $max_checked_feeds = 10;
 
     /**
@@ -656 +619 @@
      * @access private
      */
-    var $all_discovered_feeds = array();
-
-    /**
-     * @var string Web-accessible path to the handler_favicon.php file.
-     * @see SimplePie::set_favicon_handler()
-     * @access private
-     */
-    var $favicon_handler = '';
+    public $all_discovered_feeds = array();
 
     /**
@@ -670 +626 @@
      * @access private
      */
-    var $image_handler = '';
+    public $image_handler = '';
 
     /**
@@ -677 +633 @@
      * @access private
      */
-    var $multifeed_url = array();
+    public $multifeed_url = array();
 
     /**
@@ -683 +639 @@
      * @access private
      */
-    var $multifeed_objects = array();
+    public $multifeed_objects = array();
 
     /**
@@ -690 +646 @@
      * @access private
      */
-    var $config_settings = null;
+    public $config_settings = null;
 
     /**
@@ -697 +653 @@
      * @access private
      */
-    var $item_limit = 0;
+    public $item_limit = 0;
 
     /**
@@ -704 +660 @@
      * @access private
      */
-    var $strip_attributes = array('bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc');
+    public $strip_attributes = array('bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc');
 
     /**
@@ -711 +667 @@
      * @access private
      */
-    var $strip_htmltags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style');
+    public $strip_htmltags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style');
 
     /**
      * The SimplePie class contains feed level data and options
      *
-     * There are two ways that you can create a new SimplePie object. The first
-     * is by passing a feed URL as a parameter to the SimplePie constructor
-     * (as well as optionally setting the cache location and cache expiry). This
-     * will initialise the whole feed with all of the default settings, and you
-     * can begin accessing methods and properties immediately.
-     *
-     * The second way is to create the SimplePie object with no parameters
-     * at all. This will enable you to set configuration options. After setting
+     * To use SimplePie, create the SimplePie object with no parameters. You can
+     * then set configuration options using the provided methods. After setting
      * them, you must initialise the feed using $feed->init(). At that point the
-     * object's methods and properties will be available to you. This format is
-     * what is used throughout this documentation.
-     *
-     * @access public
+     * object's methods and properties will be available to you.
+     *
+     * Previously, it was possible to pass in the feed URL along with cache
+     * options directly into the constructor. This has been removed as of 1.3 as
+     * it caused a lot of confusion.
+     *
      * @since 1.0 Preview Release
-     * @param string $feed_url This is the URL you want to parse.
-     * @param string $cache_location This is where you want the cache to be stored.
-     * @param int $cache_duration This is the number of seconds that you want to store the cache file for.
-     */
-    function SimplePie($feed_url = null, $cache_location = null, $cache_duration = null)
-    {
+     */
+    public function __construct()
+    {
+        if (version_compare(PHP_VERSION, '5.2', '<'))
+        {
+            trigger_error('PHP 4.x, 5.0 and 5.1 are no longer supported. Please upgrade to PHP 5.2 or newer.');
+            die();
+        }
+
         // Other objects, instances created here so we can set options on them
-        $this->sanitize =& new SimplePie_Sanitize;
-
-        // Set options if they're passed to the constructor
-        if ($cache_location !== null)
-        {
-            $this->set_cache_location($cache_location);
-        }
-
-        if ($cache_duration !== null)
-        {
-            $this->set_cache_duration($cache_duration);
-        }
-
-        // Only init the script if we're passed a feed URL
-        if ($feed_url !== null)
-        {
-            $this->set_feed_url($feed_url);
-            $this->init();
+        $this->sanitize = new SimplePie_Sanitize();
+        $this->registry = new SimplePie_Registry();
+
+        if (func_num_args() > 0)
+        {
+            trigger_error('Passing parameters to the constructor is no longer supported. Please use set_feed_url(), set_cache_location(), and set_cache_location() directly.');
         }
     }
@@ -761 +704 @@
      * Used for converting object to a string
      */
-    function __toString()
+    public function __toString()
     {
         return md5(serialize($this->data));
@@ -769 +712 @@
      * Remove items that link back to this before destroying this object
      */
-    function __destruct()
+    public function __destruct()
     {
         if ((version_compare(PHP_VERSION, '5.3', '<') || !gc_enabled()) && !ini_get('zend.ze1_compatibility_mode'))
@@ -793 +736 @@
 
     /**
-     * Force the given data/URL to be treated as a feed no matter what it
-     * appears like
-     *
-     * @access public
+     * Force the given data/URL to be treated as a feed
+     *
+     * This tells SimplePie to ignore the content-type provided by the server.
+     * Be careful when using this option, as it will also disable autodiscovery.
+     *
      * @since 1.1
      * @param bool $enable Force the given data/URL to be treated as a feed
      */
-    function force_feed($enable = false)
+    public function force_feed($enable = false)
     {
         $this->force_feed = (bool) $enable;
@@ -806 +750 @@
 
     /**
-     * This is the URL of the feed you want to parse.
+     * Set the URL of the feed you want to parse
      *
      * This allows you to enter the URL of the feed you want to parse, or the
@@ -816 +760 @@
      * additional processing and resources.
      *
-     * @access public
      * @since 1.0 Preview Release
-     * @param mixed $url This is the URL (or array of URLs) that you want to parse.
-     * @see SimplePie::set_raw_data()
-     */
-    function set_feed_url($url)
-    {
+     * @see set_raw_data()
+     * @param string|array $url This is the URL (or array of URLs) that you want to parse.
+     */
+    public function set_feed_url($url)
+    {
+        $this->multifeed_url = array();
         if (is_array($url))
         {
-            $this->multifeed_url = array();
             foreach ($url as $value)
             {
-                $this->multifeed_url[] = SimplePie_Misc::fix_protocol($value, 1);
+                $this->multifeed_url[] = $this->registry->call('Misc', 'fix_protocol', array($value, 1));
             }
         }
         else
         {
-            $this->feed_url = SimplePie_Misc::fix_protocol($url, 1);
-        }
-    }
-
-    /**
-     * Provides an instance of SimplePie_File to use as a feed
-     *
-     * @access public
-     * @param object &$file Instance of SimplePie_File (or subclass)
+            $this->feed_url = $this->registry->call('Misc', 'fix_protocol', array($url, 1));
+        }
+    }
+
+    /**
+     * Set an instance of {@see SimplePie_File} to use as a feed
+     *
+     * @param SimplePie_File &$file
      * @return bool True on success, false on failure
      */
-    function set_file(&$file)
-    {
-        if (is_a($file, 'SimplePie_File'))
+    public function set_file(&$file)
+    {
+        if ($file instanceof SimplePie_File)
         {
             $this->feed_url = $file->url;
@@ -856 +798 @@
 
     /**
+     * Set the raw XML data to parse
+     *
      * Allows you to use a string of RSS/Atom data instead of a remote feed.
      *
@@ -862 +806 @@
      * takes precedence.
      *
-     * @access public
      * @since 1.0 Beta 3
      * @param string $data RSS or Atom data as a string.
-     * @see SimplePie::set_feed_url()
-     */
-    function set_raw_data($data)
+     * @see set_feed_url()
+     */
+    public function set_raw_data($data)
     {
         $this->raw_data = $data;
@@ -873 +816 @@
 
     /**
-     * Allows you to override the default timeout for fetching remote feeds.
+     * Set the the default timeout for fetching remote feeds
      *
      * This allows you to change the maximum time the feed's server to respond
      * and send the feed back.
      *
-     * @access public
      * @since 1.0 Beta 3
      * @param int $timeout The maximum number of seconds to spend waiting to retrieve a feed.
      */
-    function set_timeout($timeout = 10)
+    public function set_timeout($timeout = 10)
     {
         $this->timeout = (int) $timeout;
@@ -888 +830 @@
 
     /**
-     * Forces SimplePie to use fsockopen() instead of the preferred cURL
-     * functions.
-     *
-     * @access public
+     * Force SimplePie to use fsockopen() instead of cURL
+     *
      * @since 1.0 Beta 3
      * @param bool $enable Force fsockopen() to be used
      */
-    function force_fsockopen($enable = false)
+    public function force_fsockopen($enable = false)
     {
         $this->force_fsockopen = (bool) $enable;
@@ -901 +841 @@
 
     /**
-     * Outputs the raw XML content of the feed, after it has gone through
-     * SimplePie's filters.
-     *
-     * Used only for debugging, this function will output the XML content as
-     * text/xml. When SimplePie reads in a feed, it does a bit of cleaning up
-     * before trying to parse it. Many parts of the feed are re-written in
-     * memory, and in the end, you have a parsable feed. XML dump shows you the
-     * actual XML that SimplePie tries to parse, which may or may not be very
-     * different from the original feed.
-     *
-     * @access public
-     * @since 1.0 Preview Release
-     * @param bool $enable Enable XML dump
-     */
-    function enable_xml_dump($enable = false)
-    {
-        $this->xml_dump = (bool) $enable;
-    }
-
-    /**
-     * Enables/disables caching in SimplePie.
+     * Enable/disable caching in SimplePie.
      *
      * This option allows you to disable caching all-together in SimplePie.
      * However, disabling the cache can lead to longer load times.
      *
-     * @access public
      * @since 1.0 Preview Release
      * @param bool $enable Enable caching
      */
-    function enable_cache($enable = true)
+    public function enable_cache($enable = true)
     {
         $this->cache = (bool) $enable;
@@ -936 +855 @@
 
     /**
-     * Set the length of time (in seconds) that the contents of a feed
-     * will be cached.
-     *
-     * @access public
-     * @param int $seconds The feed content cache duration.
-     */
-    function set_cache_duration($seconds = 3600)
+     * Set the length of time (in seconds) that the contents of a feed will be
+     * cached
+     *
+     * @param int $seconds The feed content cache duration
+     */
+    public function set_cache_duration($seconds = 3600)
     {
         $this->cache_duration = (int) $seconds;
@@ -948 +866 @@
 
     /**
-     * Set the length of time (in seconds) that the autodiscovered feed
-     * URL will be cached.
-     *
-     * @access public
+     * Set the length of time (in seconds) that the autodiscovered feed URL will
+     * be cached
+     *
      * @param int $seconds The autodiscovered feed URL cache duration.
      */
-    function set_autodiscovery_cache_duration($seconds = 604800)
+    public function set_autodiscovery_cache_duration($seconds = 604800)
     {
         $this->autodiscovery_cache_duration = (int) $seconds;
@@ -960 +877 @@
 
     /**
-     * Set the file system location where the cached files should be stored.
-     *
-     * @access public
+     * Set the file system location where the cached files should be stored
+     *
      * @param string $location The file system location.
      */
-    function set_cache_location($location = './cache')
+    public function set_cache_location($location = './cache')
     {
         $this->cache_location = (string) $location;
@@ -971 +887 @@
 
     /**
-     * Determines whether feed items should be sorted into reverse chronological order.
-     *
-     * @access public
+     * Set whether feed items should be sorted into reverse chronological order
+     *
      * @param bool $enable Sort as reverse chronological order.
      */
-    function enable_order_by_date($enable = true)
+    public function enable_order_by_date($enable = true)
     {
         $this->order_by_date = (bool) $enable;
@@ -982 +897 @@
 
     /**
-     * Allows you to override the character encoding reported by the feed.
-     *
-     * @access public
-     * @param string $encoding Character encoding.
-     */
-    function set_input_encoding($encoding = false)
+     * Set the character encoding used to parse the feed
+     *
+     * This overrides the encoding reported by the feed, however it will fall
+     * back to the normal encoding detection if the override fails
+     *
+     * @param string $encoding Character encoding
+     */
+    public function set_input_encoding($encoding = false)
     {
         if ($encoding)
@@ -1002 +919 @@
      * Set how much feed autodiscovery to do
      *
-     * @access public
      * @see SIMPLEPIE_LOCATOR_NONE
      * @see SIMPLEPIE_LOCATOR_AUTODISCOVERY
@@ -1010 +926 @@
      * @see SIMPLEPIE_LOCATOR_REMOTE_BODY
      * @see SIMPLEPIE_LOCATOR_ALL
-     * @param int $level Feed Autodiscovery Level (level can be a
-     * combination of the above constants, see bitwise OR operator)
-     */
-    function set_autodiscovery_level($level = SIMPLEPIE_LOCATOR_ALL)
+     * @param int $level Feed Autodiscovery Level (level can be a combination of the above constants, see bitwise OR operator)
+     */
+    public function set_autodiscovery_level($level = SIMPLEPIE_LOCATOR_ALL)
     {
         $this->autodiscovery = (int) $level;
@@ -1019 +934 @@
 
     /**
-     * Allows you to change which class SimplePie uses for caching.
+     * Get the class registry
+     *
+     * Use this to override SimplePie's default classes
+     * @see SimplePie_Registry
+     * @return SimplePie_Registry
+     */
+    public function &get_registry()
+    {
+        return $this->registry;
+    }
+
+    /**#@+
      * Useful when you are overloading or extending SimplePie's default classes.
      *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
+     * @deprecated Use {@see get_registry()} instead
      * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_cache_class($class = 'SimplePie_Cache')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Cache'))
-        {
-            $this->cache_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for auto-discovery.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_locator_class($class = 'SimplePie_Locator')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Locator'))
-        {
-            $this->locator_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for XML parsing.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_parser_class($class = 'SimplePie_Parser')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Parser'))
-        {
-            $this->parser_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for remote file fetching.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_file_class($class = 'SimplePie_File')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_File'))
-        {
-            $this->file_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for data sanitization.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_sanitize_class($class = 'SimplePie_Sanitize')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Sanitize'))
-        {
-            $this->sanitize =& new $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for handling feed items.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_item_class($class = 'SimplePie_Item')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Item'))
-        {
-            $this->item_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for handling author data.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_author_class($class = 'SimplePie_Author')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Author'))
-        {
-            $this->author_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for handling category data.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_category_class($class = 'SimplePie_Category')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Category'))
-        {
-            $this->category_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for feed enclosures.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_enclosure_class($class = 'SimplePie_Enclosure')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Enclosure'))
-        {
-            $this->enclosure_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for <media:text> captions
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_caption_class($class = 'SimplePie_Caption')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Caption'))
-        {
-            $this->caption_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for <media:copyright>
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_copyright_class($class = 'SimplePie_Copyright')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Copyright'))
-        {
-            $this->copyright_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for <media:credit>
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_credit_class($class = 'SimplePie_Credit')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Credit'))
-        {
-            $this->credit_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for <media:rating>
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_rating_class($class = 'SimplePie_Rating')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Rating'))
-        {
-            $this->rating_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for <media:restriction>
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_restriction_class($class = 'SimplePie_Restriction')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Restriction'))
-        {
-            $this->restriction_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses for content-type sniffing.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_content_type_sniffer_class($class = 'SimplePie_Content_Type_Sniffer')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Content_Type_Sniffer'))
-        {
-            $this->content_type_sniffer_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to change which class SimplePie uses item sources.
-     * Useful when you are overloading or extending SimplePie's default classes.
-     *
-     * @access public
-     * @param string $class Name of custom class.
-     * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
-     * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
-     */
-    function set_source_class($class = 'SimplePie_Source')
-    {
-        if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Source'))
-        {
-            $this->source_class = $class;
-            return true;
-        }
-        return false;
-    }
-
-    /**
-     * Allows you to override the default user agent string.
-     *
-     * @access public
+     * @param string $class Name of custom class
+     * @return boolean True on success, false otherwise
+     */
+    /**
+     * Set which class SimplePie uses for caching
+     */
+    public function set_cache_class($class = 'SimplePie_Cache')
+    {
+        return $this->registry->register('Cache', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for auto-discovery
+     */
+    public function set_locator_class($class = 'SimplePie_Locator')
+    {
+        return $this->registry->register('Locator', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for XML parsing
+     */
+    public function set_parser_class($class = 'SimplePie_Parser')
+    {
+        return $this->registry->register('Parser', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for remote file fetching
+     */
+    public function set_file_class($class = 'SimplePie_File')
+    {
+        return $this->registry->register('File', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for data sanitization
+     */
+    public function set_sanitize_class($class = 'SimplePie_Sanitize')
+    {
+        return $this->registry->register('Sanitize', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for handling feed items
+     */
+    public function set_item_class($class = 'SimplePie_Item')
+    {
+        return $this->registry->register('Item', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for handling author data
+     */
+    public function set_author_class($class = 'SimplePie_Author')
+    {
+        return $this->registry->register('Author', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for handling category data
+     */
+    public function set_category_class($class = 'SimplePie_Category')
+    {
+        return $this->registry->register('Category', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for feed enclosures
+     */
+    public function set_enclosure_class($class = 'SimplePie_Enclosure')
+    {
+        return $this->registry->register('Enclosure', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for `<media:text>` captions
+     */
+    public function set_caption_class($class = 'SimplePie_Caption')
+    {
+        return $this->registry->register('Caption', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for `<media:copyright>`
+     */
+    public function set_copyright_class($class = 'SimplePie_Copyright')
+    {
+        return $this->registry->register('Copyright', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for `<media:credit>`
+     */
+    public function set_credit_class($class = 'SimplePie_Credit')
+    {
+        return $this->registry->register('Credit', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for `<media:rating>`
+     */
+    public function set_rating_class($class = 'SimplePie_Rating')
+    {
+        return $this->registry->register('Rating', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for `<media:restriction>`
+     */
+    public function set_restriction_class($class = 'SimplePie_Restriction')
+    {
+        return $this->registry->register('Restriction', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses for content-type sniffing
+     */
+    public function set_content_type_sniffer_class($class = 'SimplePie_Content_Type_Sniffer')
+    {
+        return $this->registry->register('Content_Type_Sniffer', $class, true);
+    }
+
+    /**
+     * Set which class SimplePie uses item sources
+     */
+    public function set_source_class($class = 'SimplePie_Source')
+    {
+        return $this->registry->register('Source', $class, true);
+    }
+    /**#@-*/
+
+    /**
+     * Set the user agent string
+     *
      * @param string $ua New user agent string.
      */
-    function set_useragent($ua = SIMPLEPIE_USERAGENT)
+    public function set_useragent($ua = SIMPLEPIE_USERAGENT)
     {
         $this->useragent = (string) $ua;
@@ -1336 +1095 @@
      * Set callback function to create cache filename with
      *
-     * @access public
      * @param mixed $function Callback function
      */
-    function set_cache_name_function($function = 'md5')
+    public function set_cache_name_function($function = 'md5')
     {
         if (is_callable($function))
@@ -1348 +1106 @@
 
     /**
-     * Set javascript query string parameter
-     *
-     * @access public
-     * @param mixed $get Javascript query string parameter
-     */
-    function set_javascript($get = 'js')
-    {
-        if ($get)
-        {
-            $this->javascript = (string) $get;
-        }
-        else
-        {
-            $this->javascript = false;
-        }
-    }
-
-    /**
-     * Set options to make SP as fast as possible.  Forgoes a
-     * substantial amount of data sanitization in favor of speed.
-     *
-     * @access public
+     * Set options to make SP as fast as possible
+     *
+     * Forgoes a substantial amount of data sanitization in favor of speed. This
+     * turns SimplePie into a dumb parser of feeds.
+     *
      * @param bool $set Whether to set them or not
      */
-    function set_stupidly_fast($set = false)
+    public function set_stupidly_fast($set = false)
     {
         if ($set)
@@ -1388 +1129 @@
      * Set maximum number of feeds to check with autodiscovery
      *
-     * @access public
      * @param int $max Maximum number of feeds to check
      */
-    function set_max_checked_feeds($max = 10)
+    public function set_max_checked_feeds($max = 10)
     {
         $this->max_checked_feeds = (int) $max;
     }
 
-    function remove_div($enable = true)
+    public function remove_div($enable = true)
     {
         $this->sanitize->remove_div($enable);
     }
 
-    function strip_htmltags($tags = '', $encode = null)
+    public function strip_htmltags($tags = '', $encode = null)
     {
         if ($tags === '')
@@ -1414 +1154 @@
     }
 
-    function encode_instead_of_strip($enable = true)
+    public function encode_instead_of_strip($enable = true)
     {
         $this->sanitize->encode_instead_of_strip($enable);
     }
 
-    function strip_attributes($attribs = '')
+    public function strip_attributes($attribs = '')
     {
         if ($attribs === '')
@@ -1428 +1168 @@
     }
 
-    function set_output_encoding($encoding = 'UTF-8')
+    /**
+     * Set the output encoding
+     *
+     * Allows you to override SimplePie's output to match that of your webpage.
+     * This is useful for times when your webpages are not being served as
+     * UTF-8.  This setting will be obeyed by {@see handle_content_type()}, and
+     * is similar to {@see set_input_encoding()}.
+     *
+     * It should be noted, however, that not all character encodings can support
+     * all characters.  If your page is being served as ISO-8859-1 and you try
+     * to display a Japanese feed, you'll likely see garbled characters.
+     * Because of this, it is highly recommended to ensure that your webpages
+     * are served as UTF-8.
+     *
+     * The number of supported character encodings depends on whether your web
+     * host supports {@link http://php.net/mbstring mbstring},
+     * {@link http://php.net/iconv iconv}, or both. See
+     * {@link http://simplepie.org/wiki/faq/Supported_Character_Encodings} for
+     * more information.
+     *
+     * @param string $encoding
+     */
+    public function set_output_encoding($encoding = 'UTF-8')
     {
         $this->sanitize->set_output_encoding($encoding);
     }
 
-    function strip_comments($strip = false)
+    public function strip_comments($strip = false)
     {
         $this->sanitize->strip_comments($strip);
@@ -1442 +1204 @@
      * containing URLs that need to be resolved relative to the feed
      *
-     * @access public
+     * Defaults to |a|@href, |area|@href, |blockquote|@cite, |del|@cite,
+     * |form|@action, |img|@longdesc, |img|@src, |input|@src, |ins|@cite,
+     * |q|@cite
+     *
      * @since 1.0
-     * @param array $element_attribute Element/attribute key/value pairs
-     */
-    function set_url_replacements($element_attribute = array('a' => 'href', 'area' => 'href', 'blockquote' => 'cite', 'del' => 'cite', 'form' => 'action', 'img' => array('longdesc', 'src'), 'input' => 'src', 'ins' => 'cite', 'q' => 'cite'))
+     * @param array|null $element_attribute Element/attribute key/value pairs, null for default
+     */
+    public function set_url_replacements($element_attribute = null)
     {
         $this->sanitize->set_url_replacements($element_attribute);
@@ -1452 +1217 @@
 
     /**
-     * Set the handler to enable the display of cached favicons.
-     *
-     * @access public
-     * @param str $page Web-accessible path to the handler_favicon.php file.
-     * @param str $qs The query string that the value should be passed to.
-     */
-    function set_favicon_handler($page = false, $qs = 'i')
-    {
-        if ($page !== false)
-        {
-            $this->favicon_handler = $page . '?' . $qs . '=';
-        }
-        else
-        {
-            $this->favicon_handler = '';
-        }
-    }
-
-    /**
      * Set the handler to enable the display of cached images.
      *
-     * @access public
      * @param str $page Web-accessible path to the handler_image.php file.
      * @param str $qs The query string that the value should be passed to.
      */
-    function set_image_handler($page = false, $qs = 'i')
+    public function set_image_handler($page = false, $qs = 'i')
     {
         if ($page !== false)
@@ -1490 +1235 @@
 
     /**
-     * Set the limit for items returned per-feed with multifeeds.
-     *
-     * @access public
+     * Set the limit for items returned per-feed with multifeeds
+     *
      * @param integer $limit The maximum number of items to return.
      */
-    function set_item_limit($limit = 0)
+    public function set_item_limit($limit = 0)
     {
         $this->item_limit = (int) $limit;
     }
 
-    function init()
+    /**
+     * Initialize the feed object
+     *
+     * This is what makes everything happen.  Period.  This is where all of the
+     * configuration options get processed, feeds are fetched, cached, and
+     * parsed, and all of that other good stuff.
+     *
+     * @return boolean True if successful, false otherwise
+     */
+    public function init()
     {
         // Check absolute bare minimum requirements.
-        if ((function_exists('version_compare') && version_compare(PHP_VERSION, '4.3.0', '<')) || !extension_loaded('xml') || !extension_loaded('pcre'))
+        if (!extension_loaded('xml') || !extension_loaded('pcre'))
         {
             return false;
@@ -1524 +1277 @@
         }
 
-        if (isset($_GET[$this->javascript]))
-        {
-            SimplePie_Misc::output_javascript();
-            exit;
+        if (method_exists($this->sanitize, 'set_registry'))
+        {
+            $this->sanitize->set_registry($this->registry);
         }
 
         // Pass whatever was set with config options over to the sanitizer.
-        $this->sanitize->pass_cache_data($this->cache, $this->cache_location, $this->cache_name_function, $this->cache_class);
-        $this->sanitize->pass_file_data($this->file_class, $this->timeout, $this->useragent, $this->force_fsockopen);
-
-        if ($this->feed_url !== null || $this->raw_data !== null)
-        {
-            $this->data = array();
+        // Pass the classes in for legacy support; new classes should use the registry instead
+        $this->sanitize->pass_cache_data($this->cache, $this->cache_location, $this->cache_name_function, $this->registry->get_class('Cache'));
+        $this->sanitize->pass_file_data($this->registry->get_class('File'), $this->timeout, $this->useragent, $this->force_fsockopen);
+
+        if (!empty($this->multifeed_url))
+        {
+            $i = 0;
+            $success = 0;
             $this->multifeed_objects = array();
-            $cache = false;
-
-            if ($this->feed_url !== null)
-            {
-                $parsed_feed_url = SimplePie_Misc::parse_url($this->feed_url);
-                // Decide whether to enable caching
-                if ($this->cache && $parsed_feed_url['scheme'] !== '')
-                {
-                    $cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc');
-                }
-                // If it's enabled and we don't want an XML dump, use the cache
-                if ($cache && !$this->xml_dump)
-                {
-                    // Load the Cache
-                    $this->data = $cache->load();
-                    if (!empty($this->data))
+            $this->error = array();
+            foreach ($this->multifeed_url as $url)
+            {
+                $this->multifeed_objects[$i] = clone $this;
+                $this->multifeed_objects[$i]->set_feed_url($url);
+                $single_success = $this->multifeed_objects[$i]->init();
+                $success |= $single_success;
+                if (!$single_success)
+                {
+                    $this->error[$i] = $this->multifeed_objects[$i]->error();
+                }
+                $i++;
+            }
+            return (bool) $success;
+        }
+        elseif ($this->feed_url === null && $this->raw_data === null)
+        {
+            return false;
+        }
+
+        $this->error = null;
+        $this->data = array();
+        $this->multifeed_objects = array();
+        $cache = false;
+
+        if ($this->feed_url !== null)
+        {
+            $parsed_feed_url = $this->registry->call('Misc', 'parse_url', array($this->feed_url));
+
+            // Decide whether to enable caching
+            if ($this->cache && $parsed_feed_url['scheme'] !== '')
+            {
+                $cache = $this->registry->call('Cache', 'create', array($this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc'));
+            }
+
+            // Fetch the data via SimplePie_File into $this->raw_data
+            if (($fetched = $this->fetch_data($cache)) === true)
+            {
+                return true;
+            }
+            elseif ($fetched === false) {
+                return false;
+            }
+
+            list($headers, $sniffed) = $fetched;
+        }
+
+        // Set up array of possible encodings
+        $encodings = array();
+
+        // First check to see if input has been overridden.
+        if ($this->input_encoding !== false)
+        {
+            $encodings[] = $this->input_encoding;
+        }
+
+        $application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
+        $text_types = array('text/xml', 'text/xml-external-parsed-entity');
+
+        // RFC 3023 (only applies to sniffed content)
+        if (isset($sniffed))
+        {
+            if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml')
+            {
+                if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
+                {
+                    $encodings[] = strtoupper($charset[1]);
+                }
+                $encodings = array_merge($encodings, $this->registry->call('Misc', 'xml_encoding', array($this->raw_data, &$this->registry)));
+                $encodings[] = 'UTF-8';
+            }
+            elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml')
+            {
+                if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
+                {
+                    $encodings[] = $charset[1];
+                }
+                $encodings[] = 'US-ASCII';
+            }
+            // Text MIME-type default
+            elseif (substr($sniffed, 0, 5) === 'text/')
+            {
+                $encodings[] = 'US-ASCII';
+            }
+        }
+
+        // Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
+        $encodings = array_merge($encodings, $this->registry->call('Misc', 'xml_encoding', array($this->raw_data, &$this->registry)));
+        $encodings[] = 'UTF-8';
+        $encodings[] = 'ISO-8859-1';
+
+        // There's no point in trying an encoding twice
+        $encodings = array_unique($encodings);
+
+        // Loop through each possible encoding, till we return something, or run out of possibilities
+        foreach ($encodings as $encoding)
+        {
+            // Change the encoding to UTF-8 (as we always use UTF-8 internally)
+            if ($utf8_data = $this->registry->call('Misc', 'change_encoding', array($this->raw_data, $encoding, 'UTF-8')))
+            {
+                // Create new parser
+                $parser = $this->registry->create('Parser');
+
+                // If it's parsed fine
+                if ($parser->parse($utf8_data, 'UTF-8'))
+                {
+                    $this->data = $parser->get_data();
+                    if (!($this->get_type() & ~SIMPLEPIE_TYPE_NONE))
                     {
-                        // If the cache is for an outdated build of SimplePie
-                        if (!isset($this->data['build']) || $this->data['build'] !== SIMPLEPIE_BUILD)
+                        $this->error = "A feed could not be found at $this->feed_url. This does not appear to be a valid RSS or Atom feed.";
+                        $this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
+                        return false;
+                    }
+
+                    if (isset($headers))
+                    {
+                        $this->data['headers'] = $headers;
+                    }
+                    $this->data['build'] = SIMPLEPIE_BUILD;
+
+                    // Cache the file if caching is enabled
+                    if ($cache && !$cache->save($this))
+                    {
+                        trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
+                    }
+                    return true;
+                }
+            }
+        }
+
+        if (isset($parser))
+        {
+            // We have an error, just set SimplePie_Misc::error to it and quit
+            $this->error = sprintf('This XML document is invalid, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
+        }
+        else
+        {
+            $this->error = 'The data could not be converted to UTF-8. You MUST have either the iconv or mbstring extension installed. Upgrading to PHP 5.x (which includes iconv) is highly recommended.';
+        }
+
+        $this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
+
+        return false;
+    }
+
+    /**
+     * Fetch the data via SimplePie_File
+     *
+     * If the data is already cached, attempt to fetch it from there instead
+     * @param SimplePie_Cache|false $cache Cache handler, or false to not load from the cache
+     * @return array|true Returns true if the data was loaded from the cache, or an array of HTTP headers and sniffed type
+     */
+    protected function fetch_data(&$cache)
+    {
+        // If it's enabled, use the cache
+        if ($cache)
+        {
+            // Load the Cache
+            $this->data = $cache->load();
+            if (!empty($this->data))
+            {
+                // If the cache is for an outdated build of SimplePie
+                if (!isset($this->data['build']) || $this->data['build'] !== SIMPLEPIE_BUILD)
+                {
+                    $cache->unlink();
+                    $this->data = array();
+                }
+                // If we've hit a collision just rerun it with caching disabled
+                elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url)
+                {
+                    $cache = false;
+                    $this->data = array();
+                }
+                // If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL.
+                elseif (isset($this->data['feed_url']))
+                {
+                    // If the autodiscovery cache is still valid use it.
+                    if ($cache->mtime() + $this->autodiscovery_cache_duration > time())
+                    {
+                        // Do not need to do feed autodiscovery yet.
+                        if ($this->data['feed_url'] !== $this->data['url'])
                         {
-                            $cache->unlink();
-                            $this->data = array();
+                            $this->set_feed_url($this->data['feed_url']);
+                            return $this->init();
                         }
-                        // If we've hit a collision just rerun it with caching disabled
-                        elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url)
-                        {
-                            $cache = false;
-                            $this->data = array();
-                        }
-                        // If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL.
-                        elseif (isset($this->data['feed_url']))
-                        {
-                            // If the autodiscovery cache is still valid use it.
-                            if ($cache->mtime() + $this->autodiscovery_cache_duration > time())
-                            {
-                                // Do not need to do feed autodiscovery yet.
-                                if ($this->data['feed_url'] === $this->data['url'])
-                                {
-                                    $cache->unlink();
-                                    $this->data = array();
-                                }
-                                else
-                                {
-                                    $this->set_feed_url($this->data['feed_url']);
-                                    return $this->init();
-                                }
-                            }
-                        }
-                        // Check if the cache has been updated
-                        elseif ($cache->mtime() + $this->cache_duration < time())
-                        {
-                            // If we have last-modified and/or etag set
-                            if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag']))
-                            {
-                                $headers = array();
-                                if (isset($this->data['headers']['last-modified']))
-                                {
-                                    $headers['if-modified-since'] = $this->data['headers']['last-modified'];
-                                }
-                                if (isset($this->data['headers']['etag']))
-                                {
-                                    $headers['if-none-match'] = '"' . $this->data['headers']['etag'] . '"';
-                                }
-                                $file =& new $this->file_class($this->feed_url, $this->timeout/10, 5, $headers, $this->useragent, $this->force_fsockopen);
-                                if ($file->success)
-                                {
-                                    if ($file->status_code === 304)
-                                    {
-                                        $cache->touch();
-                                        return true;
-                                    }
-                                    else
-                                    {
-                                        $headers = $file->headers;
-                                    }
-                                }
-                                else
-                                {
-                                    unset($file);
-                                }
-                            }
-                        }
-                        // If the cache is still valid, just return true
-                        else
-                        {
-                            return true;
-                        }
-                    }
-                    // If the cache is empty, delete it
-                    else
-                    {
+
                         $cache->unlink();
                         $this->data = array();
                     }
                 }
-                // If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it.
-                if (!isset($file))
-                {
-                    if (is_a($this->file, 'SimplePie_File') && $this->file->url === $this->feed_url)
+                // Check if the cache has been updated
+                elseif ($cache->mtime() + $this->cache_duration < time())
+                {
+                    // If we have last-modified and/or etag set
+                    if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag']))
                     {
-                        $file =& $this->file;
-                    }
-                    else
-                    {
-                        $file =& new $this->file_class($this->feed_url, $this->timeout, 5, null, $this->useragent, $this->force_fsockopen);
-                    }
-                }
-                // If the file connection has an error, set SimplePie::error to that and quit
-                if (!$file->success && !($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)))
-                {
-                    $this->error = $file->error;
-                    if (!empty($this->data))
-                    {
-                        return true;
-                    }
-                    else
-                    {
-                        return false;
-                    }
-                }
-
-                if (!$this->force_feed)
-                {
-                    // Check if the supplied URL is a feed, if it isn't, look for it.
-                    $locate =& new $this->locator_class($file, $this->timeout, $this->useragent, $this->file_class, $this->max_checked_feeds, $this->content_type_sniffer_class);
-                    if (!$locate->is_feed($file))
-                    {
-                        // We need to unset this so that if SimplePie::set_file() has been called that object is untouched
-                        unset($file);
-                        if ($file = $locate->find($this->autodiscovery, $this->all_discovered_feeds))
+                        $headers = array(
+                            'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
+                        );
+                        if (isset($this->data['headers']['last-modified']))
                         {
-                            if ($cache)
+                            $headers['if-modified-since'] = $this->data['headers']['last-modified'];
+                        }
+                        if (isset($this->data['headers']['etag']))
+                        {
+                            $headers['if-none-match'] = $this->data['headers']['etag'];
+                        }
+
+                        $file = $this->registry->create('File', array($this->feed_url, $this->timeout/10, 5, $headers, $this->useragent, $this->force_fsockopen));
+
+                        if ($file->success)
+                        {
+                            if ($file->status_code === 304)
                             {
-                                $this->data = array('url' => $this->feed_url, 'feed_url' => $file->url, 'build' => SIMPLEPIE_BUILD);
-                                if (!$cache->save($this))
-                                {
-                                    trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
-                                }
-                                $cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, call_user_func($this->cache_name_function, $file->url), 'spc');
+                                $cache->touch();
+                                return true;
                             }
-                            $this->feed_url = $file->url;
                         }
                         else
                         {
-                            $this->error = "A feed could not be found at $this->feed_url. A feed with an invalid mime type may fall victim to this error, or " . SIMPLEPIE_NAME . " was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.";
-                            SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
-                            return false;
+                            unset($file);
                         }
                     }
-                    $locate = null;
-                }
-
-                $headers = $file->headers;
-                $data = $file->body;
-                $sniffer =& new $this->content_type_sniffer_class($file);
-                $sniffed = $sniffer->get_type();
-            }
+                }
+                // If the cache is still valid, just return true
+                else
+                {
+                    $this->raw_data = false;
+                    return true;
+                }
+            }
+            // If the cache is empty, delete it
             else
             {
-                $data = $this->raw_data;
-            }
-
-            // Set up array of possible encodings
-            $encodings = array();
-
-            // First check to see if input has been overridden.
-            if ($this->input_encoding !== false)
-            {
-                $encodings[] = $this->input_encoding;
-            }
-
-            $application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
-            $text_types = array('text/xml', 'text/xml-external-parsed-entity');
-
-            // RFC 3023 (only applies to sniffed content)
-            if (isset($sniffed))
-            {
-                if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml')
-                {
-                    if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
+                $cache->unlink();
+                $this->data = array();
+            }
+        }
+        // If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it.
+        if (!isset($file))
+        {
+            if ($this->file instanceof SimplePie_File && $this->file->url === $this->feed_url)
+            {
+                $file =& $this->file;
+            }
+            else
+            {
+                $headers = array(
+                    'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
+                );
+                $file = $this->registry->create('File', array($this->feed_url, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen));
+            }
+        }
+        // If the file connection has an error, set SimplePie::error to that and quit
+        if (!$file->success && !($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)))
+        {
+            $this->error = $file->error;
+            return !empty($this->data);
+        }
+
+        if (!$this->force_feed)
+        {
+            // Check if the supplied URL is a feed, if it isn't, look for it.
+            $locate = $this->registry->create('Locator', array(&$file, $this->timeout, $this->useragent, $this->max_checked_feeds));
+
+            if (!$locate->is_feed($file))
+            {
+                // We need to unset this so that if SimplePie::set_file() has been called that object is untouched
+                unset($file);
+                if (!($file = $locate->find($this->autodiscovery, $this->all_discovered_feeds)))
+                {
+                    $this->error = "A feed could not be found at $this->feed_url. A feed with an invalid mime type may fall victim to this error, or " . SIMPLEPIE_NAME . " was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.";
+                    $this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
+                    return false;
+                }
+                if ($cache)
+                {
+                    $this->data = array('url' => $this->feed_url, 'feed_url' => $file->url, 'build' => SIMPLEPIE_BUILD);
+                    if (!$cache->save($this))
                     {
-                        $encodings[] = strtoupper($charset[1]);
+                        trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
                     }
-                    $encodings = array_merge($encodings, SimplePie_Misc::xml_encoding($data));
-                    $encodings[] = 'UTF-8';
-                }
-                elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml')
-                {
-                    if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
-                    {
-                        $encodings[] = $charset[1];
-                    }
-                    $encodings[] = 'US-ASCII';
-                }
-                // Text MIME-type default
-                elseif (substr($sniffed, 0, 5) === 'text/')
-                {
-                    $encodings[] = 'US-ASCII';
-                }
-            }
-
-            // Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
-            $encodings = array_merge($encodings, SimplePie_Misc::xml_encoding($data));
-            $encodings[] = 'UTF-8';
-            $encodings[] = 'ISO-8859-1';
-
-            // There's no point in trying an encoding twice
-            $encodings = array_unique($encodings);
-
-            // If we want the XML, just output that with the most likely encoding and quit
-            if ($this->xml_dump)
-            {
-                header('Content-type: text/xml; charset=' . $encodings[0]);
-                echo $data;
-                exit;
-            }
-
-            // Loop through each possible encoding, till we return something, or run out of possibilities
-            foreach ($encodings as $encoding)
-            {
-                // Change the encoding to UTF-8 (as we always use UTF-8 internally)
-                if ($utf8_data = SimplePie_Misc::change_encoding($data, $encoding, 'UTF-8'))
-                {
-                    // Create new parser
-                    $parser =& new $this->parser_class();
-
-                    // If it's parsed fine
-                    if ($parser->parse($utf8_data, 'UTF-8'))
-                    {
-                        $this->data = $parser->get_data();
-                        if ($this->get_type() & ~SIMPLEPIE_TYPE_NONE)
-                        {
-                            if (isset($headers))
-                            {
-                                $this->data['headers'] = $headers;
-                            }
-                            $this->data['build'] = SIMPLEPIE_BUILD;
-
-                            // Cache the file if caching is enabled
-                            if ($cache && !$cache->save($this))
-                            {
-                                trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
-                            }
-                            return true;
-                        }
-                        else
-                        {
-                            $this->error = "A feed could not be found at $this->feed_url. This does not appear to be a valid RSS or Atom feed.";
-                            SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
-                            return false;
-                        }
-                    }
-                }
-            }
-            if (isset($parser))
-            {
-                // We have an error, just set SimplePie_Misc::error to it and quit
-                $this->error = sprintf('This XML document is invalid, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
-            }
-            else
-            {
-                $this->error = 'The data could not be converted to UTF-8. You MUST have either the iconv or mbstring extension installed. Upgrading to PHP 5.x (which includes iconv) is highly recommended.';
-            }
-            SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
-            return false;
-        }
-        elseif (!empty($this->multifeed_url))
-        {
-            $i = 0;
-            $success = 0;
-            $this->multifeed_objects = array();
-            foreach ($this->multifeed_url as $url)
-            {
-                if (SIMPLEPIE_PHP5)
-                {
-                    // This keyword needs to defy coding standards for PHP4 compatibility
-                    $this->multifeed_objects[$i] = clone($this);
-                }
-                else
-                {
-                    $this->multifeed_objects[$i] = $this;
-                }
-                $this->multifeed_objects[$i]->set_feed_url($url);
-                $success |= $this->multifeed_objects[$i]->init();
-                $i++;
-            }
-            return (bool) $success;
-        }
-        else
-        {
-            return false;
-        }
-    }
-
-    /**
-     * Return the error message for the occured error
-     *
-     * @access public
-     * @return string Error message
-     */
-    function error()
+                    $cache = $this->registry->call('Cache', 'create', array($this->cache_location, call_user_func($this->cache_name_function, $file->url), 'spc'));
+                }
+                $this->feed_url = $file->url;
+            }
+            $locate = null;
+        }
+
+        $this->raw_data = $file->body;
+
+        $headers = $file->headers;
+        $sniffer = $this->registry->create('Content_Type_Sniffer', array(&$file));
+        $sniffed = $sniffer->get_type();
+
+        return array($headers, $sniffed);
+    }
+
+    /**
+     * Get the error message for the occured error
+     *
+     * @return string|array Error message, or array of messages for multifeeds
+     */
+    public function error()
     {
         return $this->error;
     }
 
-    function get_encoding()
+    /**
+     * Get the raw XML
+     *
+     * This is the same as the old `$feed->enable_xml_dump(true)`, but returns
+     * the data instead of printing it.
+     *
+     * @return string|boolean Raw XML data, false if the cache is used
+     */
+    public function get_raw_data()
+    {
+        return $this->raw_data;
+    }
+
+    /**
+     * Get the character encoding used for output
+     *
+     * @since Preview Release
+     * @return string
+     */
+    public function get_encoding()
     {
         return $this->sanitize->output_encoding;
     }
 
-    function handle_content_type($mime = 'text/html')
+    /**
+     * Send the content-type header with correct encoding
+     *
+     * This method ensures that the SimplePie-enabled page is being served with
+     * the correct {@link http://www.iana.org/assignments/media-types/ mime-type}
+     * and character encoding HTTP headers (character encoding determined by the
+     * {@see set_output_encoding} config option).
+     *
+     * This won't work properly if any content or whitespace has already been
+     * sent to the browser, because it relies on PHP's
+     * {@link http://php.net/header header()} function, and these are the
+     * circumstances under which the function works.
+     *
+     * Because it's setting these settings for the entire page (as is the nature
+     * of HTTP headers), this should only be used once per page (again, at the
+     * top).
+     *
+     * @param string $mime MIME type to serve the page as
+     */
+    public function handle_content_type($mime = 'text/html')
     {
         if (!headers_sent())
@@ -1865 +1660 @@
     }
 
-    function get_type()
+    /**
+     * Get the type of the feed
+     *
+     * This returns a SIMPLEPIE_TYPE_* constant, which can be tested against
+     * using {@link http://php.net/language.operators.bitwise bitwise operators}
+     *
+     * @since 0.8 (usage changed to using constants in 1.0)
+     * @see SIMPLEPIE_TYPE_NONE Unknown.
+     * @see SIMPLEPIE_TYPE_RSS_090 RSS 0.90.
+     * @see SIMPLEPIE_TYPE_RSS_091_NETSCAPE RSS 0.91 (Netscape).
+     * @see SIMPLEPIE_TYPE_RSS_091_USERLAND RSS 0.91 (Userland).
+     * @see SIMPLEPIE_TYPE_RSS_091 RSS 0.91.
+     * @see SIMPLEPIE_TYPE_RSS_092 RSS 0.92.
+     * @see SIMPLEPIE_TYPE_RSS_093 RSS 0.93.
+     * @see SIMPLEPIE_TYPE_RSS_094 RSS 0.94.
+     * @see SIMPLEPIE_TYPE_RSS_10 RSS 1.0.
+     * @see SIMPLEPIE_TYPE_RSS_20 RSS 2.0.x.
+     * @see SIMPLEPIE_TYPE_RSS_RDF RDF-based RSS.
+     * @see SIMPLEPIE_TYPE_RSS_SYNDICATION Non-RDF-based RSS (truly intended as syndication format).
+     * @see SIMPLEPIE_TYPE_RSS_ALL Any version of RSS.
+     * @see SIMPLEPIE_TYPE_ATOM_03 Atom 0.3.
+     * @see SIMPLEPIE_TYPE_ATOM_10 Atom 1.0.
+     * @see SIMPLEPIE_TYPE_ATOM_ALL Any version of Atom.
+     * @see SIMPLEPIE_TYPE_ALL Any known/supported feed type.
+     * @return int SIMPLEPIE_TYPE_* constant
+     */
+    public function get_type()
     {
         if (!isset($this->data['type']))
@@ -1946 +1767 @@
 
     /**
-     * Returns the URL for the favicon of the feed's website.
-     *
-     * @todo Cache atom:icon
-     * @access public
-     * @since 1.0
-     */
-    function get_favicon()
-    {
-        if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'icon'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
-        }
-        elseif (($url = $this->get_link()) !== null && preg_match('/^http(s)?:\/\//i', $url))
-        {
-            $favicon = SimplePie_Misc::absolutize_url('/favicon.ico', $url);
-
-            if ($this->cache && $this->favicon_handler)
-            {
-                $favicon_filename = call_user_func($this->cache_name_function, $favicon);
-                $cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, $favicon_filename, 'spi');
-
-                if ($cache->load())
-                {
-                    return $this->sanitize($this->favicon_handler . $favicon_filename, SIMPLEPIE_CONSTRUCT_IRI);
-                }
-                else
-                {
-                    $file =& new $this->file_class($favicon, $this->timeout / 10, 5, array('X-FORWARDED-FOR' => $_SERVER['REMOTE_ADDR']), $this->useragent, $this->force_fsockopen);
-
-                    if ($file->success && ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)) && strlen($file->body) > 0)
-                    {
-                        $sniffer =& new $this->content_type_sniffer_class($file);
-                        if (substr($sniffer->get_type(), 0, 6) === 'image/')
-                        {
-                            if ($cache->save(array('headers' => $file->headers, 'body' => $file->body)))
-                            {
-                                return $this->sanitize($this->favicon_handler . $favicon_filename, SIMPLEPIE_CONSTRUCT_IRI);
-                            }
-                            else
-                            {
-                                trigger_error("$cache->name is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
-                                return $this->sanitize($favicon, SIMPLEPIE_CONSTRUCT_IRI);
-                            }
-                        }
-                        // not an image
-                        else
-                        {
-                            return false;
-                        }
-                    }
-                }
-            }
-            else
-            {
-                return $this->sanitize($favicon, SIMPLEPIE_CONSTRUCT_IRI);
-            }
-        }
-        return false;
-    }
-
-    /**
+     * Get the URL for the feed
+     *
+     * May or may not be different from the URL passed to {@see set_feed_url()},
+     * depending on whether auto-discovery was used.
+     *
+     * @since Preview Release (previously called `get_feed_url()` since SimplePie 0.8.)
      * @todo If we have a perm redirect we should return the new URL
      * @todo When we make the above change, let's support <itunes:new-feed-url> as well
      * @todo Also, |atom:link|@rel=self
-     */
-    function subscribe_url()
+     * @return string|null
+     */
+    public function subscribe_url()
     {
         if ($this->feed_url !== null)
@@ -2023 +1790 @@
     }
 
-    function subscribe_feed()
-    {
-        if ($this->feed_url !== null)
-        {
-            return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 2), SIMPLEPIE_CONSTRUCT_IRI);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function subscribe_outlook()
-    {
-        if ($this->feed_url !== null)
-        {
-            return $this->sanitize('outlook' . SimplePie_Misc::fix_protocol($this->feed_url, 2), SIMPLEPIE_CONSTRUCT_IRI);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function subscribe_podcast()
-    {
-        if ($this->feed_url !== null)
-        {
-            return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 3), SIMPLEPIE_CONSTRUCT_IRI);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function subscribe_itunes()
-    {
-        if ($this->feed_url !== null)
-        {
-            return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 4), SIMPLEPIE_CONSTRUCT_IRI);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    /**
-     * Creates the subscribe_* methods' return data
-     *
-     * @access private
-     * @param string $feed_url String to prefix to the feed URL
-     * @param string $site_url String to prefix to the site URL (and
-     * suffix to the feed URL)
-     * @return mixed URL if feed exists, false otherwise
-     */
-    function subscribe_service($feed_url, $site_url = null)
-    {
-        if ($this->subscribe_url())
-        {
-            $return = $feed_url . rawurlencode($this->feed_url);
-            if ($site_url !== null && $this->get_link() !== null)
-            {
-                $return .= $site_url . rawurlencode($this->get_link());
-            }
-            return $this->sanitize($return, SIMPLEPIE_CONSTRUCT_IRI);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function subscribe_aol()
-    {
-        return $this->subscribe_service('http://feeds.my.aol.com/add.jsp?url=');
-    }
-
-    function subscribe_bloglines()
-    {
-        return $this->subscribe_service('http://www.bloglines.com/sub/');
-    }
-
-    function subscribe_eskobo()
-    {
-        return $this->subscribe_service('http://www.eskobo.com/?AddToMyPage=');
-    }
-
-    function subscribe_feedfeeds()
-    {
-        return $this->subscribe_service('http://www.feedfeeds.com/add?feed=');
-    }
-
-    function subscribe_feedster()
-    {
-        return $this->subscribe_service('http://www.feedster.com/myfeedster.php?action=addrss&confirm=no&rssurl=');
-    }
-
-    function subscribe_google()
-    {
-        return $this->subscribe_service('http://fusion.google.com/add?feedurl=');
-    }
-
-    function subscribe_gritwire()
-    {
-        return $this->subscribe_service('http://my.gritwire.com/feeds/addExternalFeed.aspx?FeedUrl=');
-    }
-
-    function subscribe_msn()
-    {
-        return $this->subscribe_service('http://my.msn.com/addtomymsn.armx?id=rss&ut=', '&ru=');
-    }
-
-    function subscribe_netvibes()
-    {
-        return $this->subscribe_service('http://www.netvibes.com/subscribe.php?url=');
-    }
-
-    function subscribe_newsburst()
-    {
-        return $this->subscribe_service('http://www.newsburst.com/Source/?add=');
-    }
-
-    function subscribe_newsgator()
-    {
-        return $this->subscribe_service('http://www.newsgator.com/ngs/subscriber/subext.aspx?url=');
-    }
-
-    function subscribe_odeo()
-    {
-        return $this->subscribe_service('http://www.odeo.com/listen/subscribe?feed=');
-    }
-
-    function subscribe_podnova()
-    {
-        return $this->subscribe_service('http://www.podnova.com/index_your_podcasts.srf?action=add&url=');
-    }
-
-    function subscribe_rojo()
-    {
-        return $this->subscribe_service('http://www.rojo.com/add-subscription?resource=');
-    }
-
-    function subscribe_yahoo()
-    {
-        return $this->subscribe_service('http://add.my.yahoo.com/rss?url=');
-    }
-
-    function get_feed_tags($namespace, $tag)
+    /**
+     * Get data for an feed-level element
+     *
+     * This method allows you to get access to ANY element/attribute that is a
+     * sub-element of the opening feed tag.
+     *
+     * The return value is an indexed array of elements matching the given
+     * namespace and tag name. Each element has `attribs`, `data` and `child`
+     * subkeys. For `attribs` and `child`, these contain namespace subkeys.
+     * `attribs` then has one level of associative name => value data (where
+     * `value` is a string) after the namespace. `child` has tag-indexed keys
+     * after the namespace, each member of which is an indexed array matching
+     * this same format.
+     *
+     * For example:
+     * <pre>
+     * // This is probably a bad example because we already support
+     * // <media:content> natively, but it shows you how to parse through
+     * // the nodes.
+     * $group = $item->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'group');
+     * $content = $group[0]['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['content'];
+     * $file = $content[0]['attribs']['']['url'];
+     * echo $file;
+     * </pre>
+     *
+     * @since 1.0
+     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
+     * @param string $namespace The URL of the XML namespace of the elements you're trying to access
+     * @param string $tag Tag name
+     * @return array
+     */
+    public function get_feed_tags($namespace, $tag)
     {
         $type = $this->get_type();
@@ -2206 +1855 @@
     }
 
-    function get_channel_tags($namespace, $tag)
+    /**
+     * Get data for an channel-level element
+     *
+     * This method allows you to get access to ANY element/attribute in the
+     * channel/header section of the feed.
+     *
+     * See {@see SimplePie::get_feed_tags()} for a description of the return value
+     *
+     * @since 1.0
+     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
+     * @param string $namespace The URL of the XML namespace of the elements you're trying to access
+     * @param string $tag Tag name
+     * @return array
+     */
+    public function get_channel_tags($namespace, $tag)
     {
         $type = $this->get_type();
@@ -2249 +1912 @@
     }
 
-    function get_image_tags($namespace, $tag)
+    /**
+     * Get data for an channel-level element
+     *
+     * This method allows you to get access to ANY element/attribute in the
+     * image/logo section of the feed.
+     *
+     * See {@see SimplePie::get_feed_tags()} for a description of the return value
+     *
+     * @since 1.0
+     * @see http://simplepie.org/wiki/faq/supported_xml_namespaces
+     * @param string $namespace The URL of the XML namespace of the elements you're trying to access
+     * @param string $tag Tag name
+     * @return array
+     */
+    public function get_image_tags($namespace, $tag)
     {
         $type = $this->get_type();
@@ -2285 +1962 @@
     }
 
-    function get_base($element = array())
+    /**
+     * Get the base URL value from the feed
+     *
+     * Uses `<xml:base>` if available, otherwise uses the first link in the
+     * feed, or failing that, the URL of the feed itself.
+     *
+     * @see get_link
+     * @see subscribe_url
+     *
+     * @param array $element
+     * @return string
+     */
+    public function get_base($element = array())
     {
         if (!($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION) && !empty($element['xml_base_explicit']) && isset($element['xml_base']))
@@ -2301 +1990 @@
     }
 
-    function sanitize($data, $type, $base = '')
+    /**
+     * Sanitize feed data
+     *
+     * @access private
+     * @see SimplePie_Sanitize::sanitize()
+     * @param string $data Data to sanitize
+     * @param int $type One of the SIMPLEPIE_CONSTRUCT_* constants
+     * @param string $base Base URL to resolve URLs against
+     * @return string Sanitized data
+     */
+    public function sanitize($data, $type, $base = '')
     {
         return $this->sanitize->sanitize($data, $type, $base);
     }
 
-    function get_title()
+    /**
+     * Get the title of the feed
+     *
+     * Uses `<atom:title>`, `<title>` or `<dc:title>`
+     *
+     * @since 1.0 (previously called `get_feed_title` since 0.8)
+     * @return string|null
+     */
+    public function get_title()
     {
         if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
         {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
+            return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
         }
         elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
         {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
+            return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
         }
         elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
@@ -2342 +2049 @@
     }
 
-    function get_category($key = 0)
+    /**
+     * Get a category for the feed
+     *
+     * @since Unknown
+     * @param int $key The category that you want to return.  Remember that arrays begin with 0, not 1
+     * @return SimplePie_Category|null
+     */
+    public function get_category($key = 0)
     {
         $categories = $this->get_categories();
@@ -2355 +2069 @@
     }
 
-    function get_categories()
+    /**
+     * Get all categories for the feed
+     *
+     * Uses `<atom:category>`, `<category>` or `<dc:subject>`
+     *
+     * @since Unknown
+     * @return array|null List of {@see SimplePie_Category} objects
+     */
+    public function get_categories()
     {
         $categories = array();
@@ -2376 +2098 @@
                 $label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
             }
-            $categories[] =& new $this->category_class($term, $scheme, $label);
+            $categories[] = $this->registry->create('Category', array($term, $scheme, $label));
         }
         foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
@@ -2391 +2113 @@
                 $scheme = null;
             }
-            $categories[] =& new $this->category_class($term, $scheme, null);
+            $categories[] = $this->registry->create('Category', array($term, $scheme, null));
         }
         foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
         {
-            $categories[] =& new $this->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
+            $categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
         }
         foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
         {
-            $categories[] =& new $this->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
+            $categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
         }
 
         if (!empty($categories))
         {
-            return SimplePie_Misc::array_unique($categories);
+            return array_unique($categories);
         }
         else
@@ -2412 +2134 @@
     }
 
-    function get_author($key = 0)
+    /**
+     * Get an author for the feed
+     *
+     * @since 1.1
+     * @param int $key The author that you want to return.  Remember that arrays begin with 0, not 1
+     * @return SimplePie_Author|null
+     */
+    public function get_author($key = 0)
     {
         $authors = $this->get_authors();
@@ -2425 +2154 @@
     }
 
-    function get_authors()
+    /**
+     * Get all authors for the feed
+     *
+     * Uses `<atom:author>`, `<author>`, `<dc:creator>` or `<itunes:author>`
+     *
+     * @since 1.1
+     * @return array|null List of {@see SimplePie_Author} objects
+     */
+    public function get_authors()
     {
         $authors = array();
@@ -2447 +2184 @@
             if ($name !== null || $email !== null || $uri !== null)
             {
-                $authors[] =& new $this->author_class($name, $uri, $email);
+                $authors[] = $this->registry->create('Author', array($name, $uri, $email));
             }
         }
@@ -2469 +2206 @@
             if ($name !== null || $email !== null || $url !== null)
             {
-                $authors[] =& new $this->author_class($name, $url, $email);
+                $authors[] = $this->registry->create('Author', array($name, $url, $email));
             }
         }
         foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
         {
-            $authors[] =& new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
+            $authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
         }
         foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
         {
-            $authors[] =& new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
+            $authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
         }
         foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
         {
-            $authors[] =& new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
+            $authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
         }
 
         if (!empty($authors))
         {
-            return SimplePie_Misc::array_unique($authors);
+            return array_unique($authors);
         }
         else
@@ -2495 +2232 @@
     }
 
-    function get_contributor($key = 0)
+    /**
+     * Get a contributor for the feed
+     *
+     * @since 1.1
+     * @param int $key The contrbutor that you want to return.  Remember that arrays begin with 0, not 1
+     * @return SimplePie_Author|null
+     */
+    public function get_contributor($key = 0)
     {
         $contributors = $this->get_contributors();
@@ -2508 +2252 @@
     }
 
-    function get_contributors()
+    /**
+     * Get all contributors for the feed
+     *
+     * Uses `<atom:contributor>`
+     *
+     * @since 1.1
+     * @return array|null List of {@see SimplePie_Author} objects
+     */
+    public function get_contributors()
     {
         $contributors = array();
@@ -2530 +2282 @@
             if ($name !== null || $email !== null || $uri !== null)
             {
-                $contributors[] =& new $this->author_class($name, $uri, $email);
+                $contributors[] = $this->registry->create('Author', array($name, $uri, $email));
             }
         }
@@ -2552 +2304 @@
             if ($name !== null || $email !== null || $url !== null)
             {
-                $contributors[] =& new $this->author_class($name, $url, $email);
+                $contributors[] = $this->registry->create('Author', array($name, $url, $email));
             }
         }
@@ -2558 +2310 @@
         if (!empty($contributors))
         {
-            return SimplePie_Misc::array_unique($contributors);
+            return array_unique($contributors);
         }
         else
@@ -2566 +2318 @@
     }
 
-    function get_link($key = 0, $rel = 'alternate')
+    /**
+     * Get a single link for the feed
+     *
+     * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
+     * @param int $key The link that you want to return.  Remember that arrays begin with 0, not 1
+     * @param string $rel The relationship of the link to return
+     * @return string|null Link URL
+     */
+    public function get_link($key = 0, $rel = 'alternate')
     {
         $links = $this->get_links($rel);
@@ -2580 +2340 @@
 
     /**
-     * Added for parity between the parent-level and the item/entry-level.
-     */
-    function get_permalink()
+     * Get the permalink for the item
+     *
+     * Returns the first link available with a relationship of "alternate".
+     * Identical to {@see get_link()} with key 0
+     *
+     * @see get_link
+     * @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
+     * @internal Added for parity between the parent-level and the item/entry-level.
+     * @return string|null Link URL
+     */
+    public function get_permalink()
     {
         return $this->get_link(0);
     }
 
-    function get_links($rel = 'alternate')
+    /**
+     * Get all links for the feed
+     *
+     * Uses `<atom:link>` or `<link>`
+     *
+     * @since Beta 2
+     * @param string $rel The relationship of links to return
+     * @return array|null Links found for the feed (strings)
+     */
+    public function get_links($rel = 'alternate')
     {
         if (!isset($this->data['links']))
@@ -2631 +2408 @@
             foreach ($keys as $key)
             {
-                if (SimplePie_Misc::is_isegment_nz_nc($key))
+                if ($this->registry->call('Misc', 'is_isegment_nz_nc', array($key)))
                 {
                     if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
@@ -2661 +2438 @@
     }
 
-    function get_all_discovered_feeds()
+    public function get_all_discovered_feeds()
     {
         return $this->all_discovered_feeds;
     }
 
-    function get_description()
+    /**
+     * Get the content for the item
+     *
+     * Uses `<atom:subtitle>`, `<atom:tagline>`, `<description>`,
+     * `<dc:description>`, `<itunes:summary>` or `<itunes:subtitle>`
+     *
+     * @since 1.0 (previously called `get_feed_description()` since 0.8)
+     * @return string|null
+     */
+    public function get_description()
     {
         if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'subtitle'))
         {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
+            return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
         }
         elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'tagline'))
         {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
+            return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
         }
         elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description'))
@@ -2710 +2496 @@
     }
 
-    function get_copyright()
+    /**
+     * Get the copyright info for the feed
+     *
+     * Uses `<atom:rights>`, `<atom:copyright>` or `<dc:rights>`
+     *
+     * @since 1.0 (previously called `get_feed_copyright()` since 0.8)
+     * @return string|null
+     */
+    public function get_copyright()
     {
         if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
         {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
+            return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
         }
         elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'copyright'))
         {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
+            return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
         }
         elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'copyright'))
@@ -2738 +2532 @@
     }
 
-    function get_language()
+    /**
+     * Get the language for the feed
+     *
+     * Uses `<language>`, `<dc:language>`, or @xml_lang
+     *
+     * @since 1.0 (previously called `get_feed_language()` since 0.8)
+     * @return string|null
+     */
+    public function get_language()
     {
         if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'language'))
@@ -2774 +2576 @@
     }
 
-    function get_latitude()
+    /**
+     * Get the latitude coordinates for the item
+     *
+     * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
+     *
+     * Uses `<geo:lat>` or `<georss:point>`
+     *
+     * @since 1.0
+     * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
+     * @link http://www.georss.org/ GeoRSS
+     * @return string|null
+     */
+    public function get_latitude()
     {
 
@@ -2791 +2605 @@
     }
 
-    function get_longitude()
+    /**
+     * Get the longitude coordinates for the feed
+     *
+     * Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
+     *
+     * Uses `<geo:long>`, `<geo:lon>` or `<georss:point>`
+     *
+     * @since 1.0
+     * @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
+     * @link http://www.georss.org/ GeoRSS
+     * @return string|null
+     */
+    public function get_longitude()
     {
         if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'long'))
@@ -2811 +2637 @@
     }
 
-    function get_image_title()
+    /**
+     * Get the feed logo's title
+     *
+     * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" title.
+     *
+     * Uses `<image><title>` or `<image><dc:title>`
+     *
+     * @return string|null
+     */
+    public function get_image_title()
     {
         if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
@@ -2839 +2674 @@
     }
 
-    function get_image_url()
+    /**
+     * Get the feed logo's URL
+     *
+     * RSS 0.9.0, 2.0, Atom 1.0, and feeds with iTunes RSS tags are allowed to
+     * have a "feed logo" URL. This points directly to the image itself.
+     *
+     * Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`,
+     * `<image><title>` or `<image><dc:title>`
+     *
+     * @return string|null
+     */
+    public function get_image_url()
     {
         if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'image'))
@@ -2871 +2717 @@
     }
 
-    function get_image_link()
+
+    /**
+     * Get the feed logo's link
+     *
+     * RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" link. This
+     * points to a human-readable page that the image should link to.
+     *
+     * Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`,
+     * `<image><title>` or `<image><dc:title>`
+     *
+     * @return string|null
+     */
+    public function get_image_link()
     {
         if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
@@ -2891 +2749 @@
     }
 
-    function get_image_width()
+    /**
+     * Get the feed logo's link
+     *
+     * RSS 2.0 feeds are allowed to have a "feed logo" width.
+     *
+     * Uses `<image><width>` or defaults to 88.0 if no width is specified and
+     * the feed is an RSS 2.0 feed.
+     *
+     * @return int|float|null
+     */
+    public function get_image_width()
     {
         if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'width'))
@@ -2907 +2775 @@
     }
 
-    function get_image_height()
+    /**
+     * Get the feed logo's height
+     *
+     * RSS 2.0 feeds are allowed to have a "feed logo" height.
+     *
+     * Uses `<image><height>` or defaults to 31.0 if no height is specified and
+     * the feed is an RSS 2.0 feed.
+     *
+     * @return int|float|null
+     */
+    public function get_image_height()
     {
         if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'height'))
@@ -2923 +2801 @@
     }
 
-    function get_item_quantity($max = 0)
+    /**
+     * Get the number of items in the feed
+     *
+     * This is well-suited for {@link http://php.net/for for()} loops with
+     * {@see get_item()}
+     *
+     * @param int $max Maximum value to return. 0 for no limit
+     * @return int Number of items in the feed
+     */
+    public function get_item_quantity($max = 0)
     {
         $max = (int) $max;
@@ -2937 +2824 @@
     }
 
-    function get_item($key = 0)
+    /**
+     * Get a single item from the feed
+     *
+     * This is better suited for {@link http://php.net/for for()} loops, whereas
+     * {@see get_items()} is better suited for
+     * {@link http://php.net/foreach foreach()} loops.
+     *
+     * @see get_item_quantity()
+     * @since Beta 2
+     * @param int $key The item that you want to return.  Remember that arrays begin with 0, not 1
+     * @return SimplePie_Item|null
+     */
+    public function get_item($key = 0)
     {
         $items = $this->get_items();
@@ -2950 +2849 @@
     }
 
-    function get_items($start = 0, $end = 0)
+    /**
+     * Get all items from the feed
+     *
+     * This is better suited for {@link http://php.net/for for()} loops, whereas
+     * {@see get_items()} is better suited for
+     * {@link http://php.net/foreach foreach()} loops.
+     *
+     * @see get_item_quantity
+     * @since Beta 2
+     * @param int $start Index to start at
+     * @param int $end Number of items to return. 0 for all items after `$start`
+     * @return array|null List of {@see SimplePie_Item} objects
+     */
+    public function get_items($start = 0, $end = 0)
     {
         if (!isset($this->data['items']))
@@ -2966 +2878 @@
                     foreach ($keys as $key)
                     {
-                        $this->data['items'][] =& new $this->item_class($this, $items[$key]);
+                        $this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
                     }
                 }
@@ -2974 +2886 @@
                     foreach ($keys as $key)
                     {
-                        $this->data['items'][] =& new $this->item_class($this, $items[$key]);
+                        $this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
                     }
                 }
@@ -2982 +2894 @@
                     foreach ($keys as $key)
                     {
-                        $this->data['items'][] =& new $this->item_class($this, $items[$key]);
+                        $this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
                     }
                 }
@@ -2990 +2902 @@
                     foreach ($keys as $key)
                     {
-                        $this->data['items'][] =& new $this->item_class($this, $items[$key]);
+                        $this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
                     }
                 }
@@ -2998 +2910 @@
                     foreach ($keys as $key)
                     {
-                        $this->data['items'][] =& new $this->item_class($this, $items[$key]);
+                        $this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
                     }
                 }
@@ -3024 +2936 @@
                     if ($do_sort)
                     {
-                        usort($this->data['ordered_items'], array(&$this, 'sort_items'));
+                        usort($this->data['ordered_items'], array(get_class($this), 'sort_items'));
                     }
                 }
@@ -3051 +2963 @@
 
     /**
-     * @static
-     */
-    function sort_items($a, $b)
+     * Sorting callback for items
+     *
+     * @access private
+     * @param SimplePie $a
+     * @param SimplePie $b
+     * @return boolean
+     */
+    public static function sort_items($a, $b)
     {
         return $a->get_date('U') <= $b->get_date('U');
@@ -3059 +2976 @@
 
     /**
-     * @static
-     */
-    function merge_items($urls, $start = 0, $end = 0, $limit = 0)
+     * Merge items from several feeds into one
+     *
+     * If you're merging multiple feeds together, they need to all have dates
+     * for the items or else SimplePie will refuse to sort them.
+     *
+     * @link http://simplepie.org/wiki/tutorial/sort_multiple_feeds_by_time_and_date#if_feeds_require_separate_per-feed_settings
+     * @param array $urls List of SimplePie feed objects to merge
+     * @param int $start Starting item
+     * @param int $end Number of items to return
+     * @param int $limit Maximum number of items per feed
+     * @return array
+     */
+    public static function merge_items($urls, $start = 0, $end = 0, $limit = 0)
     {
         if (is_array($urls) && sizeof($urls) > 0)
@@ -3068 +2995 @@
             foreach ($urls as $arg)
             {
-                if (is_a($arg, 'SimplePie'))
+                if ($arg instanceof SimplePie)
                 {
                     $items = array_merge($items, $arg->get_items(0, $limit));
@@ -3090 +3017 @@
             if ($do_sort)
             {
-                usort($items, array('SimplePie', 'sort_items'));
+                usort($items, array(get_class($urls[0]), 'sort_items'));
             }
 
@@ -3109 +3036 @@
     }
 }
-
-class SimplePie_Item
-{
-    var $feed;
-    var $data = array();
-
-    function SimplePie_Item($feed, $data)
-    {
-        $this->feed = $feed;
-        $this->data = $data;
-    }
-
-    function __toString()
-    {
-        return md5(serialize($this->data));
-    }
-
-    /**
-     * Remove items that link back to this before destroying this object
-     */
-    function __destruct()
-    {
-        if ((version_compare(PHP_VERSION, '5.3', '<') || !gc_enabled()) && !ini_get('zend.ze1_compatibility_mode'))
-        {
-            unset($this->feed);
-        }
-    }
-
-    function get_item_tags($namespace, $tag)
-    {
-        if (isset($this->data['child'][$namespace][$tag]))
-        {
-            return $this->data['child'][$namespace][$tag];
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_base($element = array())
-    {
-        return $this->feed->get_base($element);
-    }
-
-    function sanitize($data, $type, $base = '')
-    {
-        return $this->feed->sanitize($data, $type, $base);
-    }
-
-    function get_feed()
-    {
-        return $this->feed;
-    }
-
-    function get_id($hash = false)
-    {
-        if (!$hash)
-        {
-            if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'id'))
-            {
-                return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'id'))
-            {
-                return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'guid'))
-            {
-                return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'identifier'))
-            {
-                return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'identifier'))
-            {
-                return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            elseif (($return = $this->get_permalink()) !== null)
-            {
-                return $return;
-            }
-            elseif (($return = $this->get_title()) !== null)
-            {
-                return $return;
-            }
-        }
-        if ($this->get_permalink() !== null || $this->get_title() !== null)
-        {
-            return md5($this->get_permalink() . $this->get_title());
-        }
-        else
-        {
-            return md5(serialize($this->data));
-        }
-    }
-
-    function get_title()
-    {
-        if (!isset($this->data['title']))
-        {
-            if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
-            {
-                $this->data['title'] = $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
-            {
-                $this->data['title'] = $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
-            {
-                $this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
-            {
-                $this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
-            {
-                $this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
-            {
-                $this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
-            {
-                $this->data['title'] = $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            else
-            {
-                $this->data['title'] = null;
-            }
-        }
-        return $this->data['title'];
-    }
-
-    function get_description($description_only = false)
-    {
-        if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'summary'))
-        {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'summary'))
-        {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'description'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'description'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'description'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'summary'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'subtitle'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'description'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML);
-        }
-
-        elseif (!$description_only)
-        {
-            return $this->get_content(true);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_content($content_only = false)
-    {
-        if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'content'))
-        {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_content_construct_type($return[0]['attribs']), $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'content'))
-        {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10_MODULES_CONTENT, 'encoded'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
-        }
-        elseif (!$content_only)
-        {
-            return $this->get_description(true);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_category($key = 0)
-    {
-        $categories = $this->get_categories();
-        if (isset($categories[$key]))
-        {
-            return $categories[$key];
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_categories()
-    {
-        $categories = array();
-
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
-        {
-            $term = null;
-            $scheme = null;
-            $label = null;
-            if (isset($category['attribs']['']['term']))
-            {
-                $term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if (isset($category['attribs']['']['scheme']))
-            {
-                $scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if (isset($category['attribs']['']['label']))
-            {
-                $label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            $categories[] =& new $this->feed->category_class($term, $scheme, $label);
-        }
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
-        {
-            // This is really the label, but keep this as the term also for BC.
-            // Label will also work on retrieving because that falls back to term.
-            $term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            if (isset($category['attribs']['']['domain']))
-            {
-                $scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            else
-            {
-                $scheme = null;
-            }
-            $categories[] =& new $this->feed->category_class($term, $scheme, null);
-        }
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
-        {
-            $categories[] =& new $this->feed->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
-        }
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
-        {
-            $categories[] =& new $this->feed->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
-        }
-
-        if (!empty($categories))
-        {
-            return SimplePie_Misc::array_unique($categories);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_author($key = 0)
-    {
-        $authors = $this->get_authors();
-        if (isset($authors[$key]))
-        {
-            return $authors[$key];
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_contributor($key = 0)
-    {
-        $contributors = $this->get_contributors();
-        if (isset($contributors[$key]))
-        {
-            return $contributors[$key];
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_contributors()
-    {
-        $contributors = array();
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
-        {
-            $name = null;
-            $uri = null;
-            $email = null;
-            if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
-            {
-                $name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
-            {
-                $uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
-            }
-            if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
-            {
-                $email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if ($name !== null || $email !== null || $uri !== null)
-            {
-                $contributors[] =& new $this->feed->author_class($name, $uri, $email);
-            }
-        }
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
-        {
-            $name = null;
-            $url = null;
-            $email = null;
-            if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
-            {
-                $name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
-            {
-                $url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
-            }
-            if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
-            {
-                $email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if ($name !== null || $email !== null || $url !== null)
-            {
-                $contributors[] =& new $this->feed->author_class($name, $url, $email);
-            }
-        }
-
-        if (!empty($contributors))
-        {
-            return SimplePie_Misc::array_unique($contributors);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_authors()
-    {
-        $authors = array();
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
-        {
-            $name = null;
-            $uri = null;
-            $email = null;
-            if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
-            {
-                $name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
-            {
-                $uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
-            }
-            if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
-            {
-                $email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if ($name !== null || $email !== null || $uri !== null)
-            {
-                $authors[] =& new $this->feed->author_class($name, $uri, $email);
-            }
-        }
-        if ($author = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
-        {
-            $name = null;
-            $url = null;
-            $email = null;
-            if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
-            {
-                $name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
-            {
-                $url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
-            }
-            if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
-            {
-                $email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-            }
-            if ($name !== null || $email !== null || $url !== null)
-            {
-                $authors[] =& new $this->feed->author_class($name, $url, $email);
-            }
-        }
-        if ($author = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'author'))
-        {
-            $authors[] =& new $this->feed->author_class(null, null, $this->sanitize($author[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-        }
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
-        {
-            $authors[] =& new $this->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
-        }
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
-        {
-            $authors[] =& new $this->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
-        }
-        foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
-        {
-            $authors[] =& new $this->feed->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
-        }
-
-        if (!empty($authors))
-        {
-            return SimplePie_Misc::array_unique($authors);
-        }
-        elseif (($source = $this->get_source()) && ($authors = $source->get_authors()))
-        {
-            return $authors;
-        }
-        elseif ($authors = $this->feed->get_authors())
-        {
-            return $authors;
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_copyright()
-    {
-        if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
-        {
-            return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'rights'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-        }
-        elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'rights'))
-        {
-            return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_date($date_format = 'j F Y, g:i a')
-    {
-        if (!isset($this->data['date']))
-        {
-            if ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'published'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'updated'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'issued'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'created'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'modified'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'pubDate'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_11, 'date'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-            elseif ($return = $this->get_item_tags(SIMPLEPIE_NAMESPACE_DC_10, 'date'))
-            {
-                $this->data['date']['raw'] = $return[0]['data'];
-            }
-
-            if (!empty($this->data['date']['raw']))
-            {
-                $parser = SimplePie_Parse_Date::get();
-                $this->data['date']['parsed'] = $parser->parse($this->data['date']['raw']);
-            }
-            else
-            {
-                $this->data['date'] = null;
-            }
-        }
-        if ($this->data['date'])
-        {
-            $date_format = (string) $date_format;
-            switch ($date_format)
-            {
-                case '':
-                    return $this->sanitize($this->data['date']['raw'], SIMPLEPIE_CONSTRUCT_TEXT);
-
-                case 'U':
-                    return $this->data['date']['parsed'];
-
-                default:
-                    return date($date_format, $this->data['date']['parsed']);
-            }
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_local_date($date_format = '%c')
-    {
-        if (!$date_format)
-        {
-            return $this->sanitize($this->get_date(''), SIMPLEPIE_CONSTRUCT_TEXT);
-        }
-        elseif (($date = $this->get_date('U')) !== null && $date !== false)
-        {
-            return strftime($date_format, $date);
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_permalink()
-    {
-        $link = $this->get_link();
-        $enclosure = $this->get_enclosure(0);
-        if ($link !== null)
-        {
-            return $link;
-        }
-        elseif ($enclosure !== null)
-        {
-            return $enclosure->get_link();
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_link($key = 0, $rel = 'alternate')
-    {
-        $links = $this->get_links($rel);
-        if ($links[$key] !== null)
-        {
-            return $links[$key];
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    function get_links($rel = 'alternate')
-    {
-        if (!isset($this->data['links']))
-        {
-            $this->data['links'] = array();
-            foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link') as $link)
-            {
-                if (isset($link['attribs']['']['href']))
-                {
-                    $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
-                    $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
-
-                }
-            }
-            foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link') as $link)
-            {
-                if (isset($link['attribs']['']['href']))
-                {
-                    $link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
-                    $this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
-                }
-            }
-            if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
-            {
-                $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
-            }
-            if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
-            {
-                $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
-            }
-            if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
-            {
-                $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
-            }
-            if ($links = $this->get_item_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'guid'))
-            {
-                if (!isset($links[0]['attribs']['']['isPermaLink']) || strtolower(trim($links[0]['attribs']['']['isPermaLink'])) === 'true')
-                {
-                    $this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
-                }
-            }
-
-            $keys = array_keys($this->data['links']);
-            foreach ($keys as $key)
-            {
-                if (SimplePie_Misc::is_isegment_nz_nc($key))
-                {
-                    if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
-                    {
-                        $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]);
-                        $this->data['links'][$key] =& $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key];
-                    }
-                    else
-                    {
-                        $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
-                    }
-                }
-                elseif (substr($key, 0, 41) === SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY)
-                {
-                    $this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
-                }
-                $this->data['links'][$key] = array_unique($this->data['links'][$key]);
-            }
-        }
-        if (isset($this->data['links'][$rel]))
-        {
-            return $this->data['links'][$rel];
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    /**
-     * @todo Add ability to prefer one type of content over another (in a media group).
-     */
-    function get_enclosure($key = 0, $prefer = null)
-    {
-        $enclosures = $this->get_enclosures();
-        if (isset($enclosures[$key]))
-        {
-            return $enclosures[$key];
-        }
-        else
-        {
-            return null;
-        }
-    }
-
-    /**
-     * Grabs all available enclosures (podcasts, etc.)
-     *
-     * Supports the <enclosure> RSS tag, as well as Media RSS and iTunes RSS.
-     *
-     * At this point, we're pretty much assuming that all enclosures for an item are the same content.  Anything else is too complicated to properly support.
-     *
-     * @todo Add support for end-user defined sorting of enclosures by type/handler (so we can prefer the faster-loading FLV over MP4).
-     * @todo If an element exists at a level, but it's value is empty, we should fall back to the value from the parent (if it exists).
-     */
-    function get_enclosures()
-    {
-        if (!isset($this->data['enclosures']))
-        {
-            $this->data['enclosures'] = array();
-
-            // Elements
-            $captions_parent = null;
-            $categories_parent = null;
-            $copyrights_parent = null;
-            $credits_parent = null;
-            $description_parent = null;
-            $duration_parent = null;
-            $hashes_parent = null;
-            $keywords_parent = null;
-            $player_parent = null;
-            $ratings_parent = null;
-            $restrictions_parent = null;
-            $thumbnails_parent = null;
-            $title_parent = null;
-
-            // Let's do the channel and item-level ones first, and just re-use them if we need to.
-            $parent = $this->get_feed();
-
-            // CAPTIONS
-            if ($captions = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'text'))
-            {
-                foreach ($captions as $caption)
-                {
-                    $caption_type = null;
-                    $caption_lang = null;
-                    $caption_startTime = null;
-                    $caption_endTime = null;
-                    $caption_text = null;
-                    if (isset($caption['attribs']['']['type']))
-                    {
-                        $caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['attribs']['']['lang']))
-                    {
-                        $caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['attribs']['']['start']))
-                    {
-                        $caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['attribs']['']['end']))
-                    {
-                        $caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['data']))
-                    {
-                        $caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $captions_parent[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
-                }
-            }
-            elseif ($captions = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'text'))
-            {
-                foreach ($captions as $caption)
-                {
-                    $caption_type = null;
-                    $caption_lang = null;
-                    $caption_startTime = null;
-                    $caption_endTime = null;
-                    $caption_text = null;
-                    if (isset($caption['attribs']['']['type']))
-                    {
-                        $caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['attribs']['']['lang']))
-                    {
-                        $caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['attribs']['']['start']))
-                    {
-                        $caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['attribs']['']['end']))
-                    {
-                        $caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($caption['data']))
-                    {
-                        $caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $captions_parent[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
-                }
-            }
-            if (is_array($captions_parent))
-            {
-                $captions_parent = array_values(SimplePie_Misc::array_unique($captions_parent));
-            }
-
-            // CATEGORIES
-            foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'category') as $category)
-            {
-                $term = null;
-                $scheme = null;
-                $label = null;
-                if (isset($category['data']))
-                {
-                    $term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                if (isset($category['attribs']['']['scheme']))
-                {
-                    $scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                else
-                {
-                    $scheme = 'http://search.yahoo.com/mrss/category_schema';
-                }
-                if (isset($category['attribs']['']['label']))
-                {
-                    $label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                $categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);
-            }
-            foreach ((array) $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'category') as $category)
-            {
-                $term = null;
-                $scheme = null;
-                $label = null;
-                if (isset($category['data']))
-                {
-                    $term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                if (isset($category['attribs']['']['scheme']))
-                {
-                    $scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                else
-                {
-                    $scheme = 'http://search.yahoo.com/mrss/category_schema';
-                }
-                if (isset($category['attribs']['']['label']))
-                {
-                    $label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                $categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);
-            }
-            foreach ((array) $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'category') as $category)
-            {
-                $term = null;
-                $scheme = 'http://www.itunes.com/dtds/podcast-1.0.dtd';
-                $label = null;
-                if (isset($category['attribs']['']['text']))
-                {
-                    $label = $this->sanitize($category['attribs']['']['text'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                $categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);
-
-                if (isset($category['child'][SIMPLEPIE_NAMESPACE_ITUNES]['category']))
-                {
-                    foreach ((array) $category['child'][SIMPLEPIE_NAMESPACE_ITUNES]['category'] as $subcategory)
-                    {
-                        if (isset($subcategory['attribs']['']['text']))
-                        {
-                            $label = $this->sanitize($subcategory['attribs']['']['text'], SIMPLEPIE_CONSTRUCT_TEXT);
-                        }
-                        $categories_parent[] =& new $this->feed->category_class($term, $scheme, $label);
-                    }
-                }
-            }
-            if (is_array($categories_parent))
-            {
-                $categories_parent = array_values(SimplePie_Misc::array_unique($categories_parent));
-            }
-
-            // COPYRIGHT
-            if ($copyright = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'copyright'))
-            {
-                $copyright_url = null;
-                $copyright_label = null;
-                if (isset($copyright[0]['attribs']['']['url']))
-                {
-                    $copyright_url = $this->sanitize($copyright[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                if (isset($copyright[0]['data']))
-                {
-                    $copyright_label = $this->sanitize($copyright[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                $copyrights_parent =& new $this->feed->copyright_class($copyright_url, $copyright_label);
-            }
-            elseif ($copyright = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'copyright'))
-            {
-                $copyright_url = null;
-                $copyright_label = null;
-                if (isset($copyright[0]['attribs']['']['url']))
-                {
-                    $copyright_url = $this->sanitize($copyright[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                if (isset($copyright[0]['data']))
-                {
-                    $copyright_label = $this->sanitize($copyright[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-                $copyrights_parent =& new $this->feed->copyright_class($copyright_url, $copyright_label);
-            }
-
-            // CREDITS
-            if ($credits = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'credit'))
-            {
-                foreach ($credits as $credit)
-                {
-                    $credit_role = null;
-                    $credit_scheme = null;
-                    $credit_name = null;
-                    if (isset($credit['attribs']['']['role']))
-                    {
-                        $credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($credit['attribs']['']['scheme']))
-                    {
-                        $credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    else
-                    {
-                        $credit_scheme = 'urn:ebu';
-                    }
-                    if (isset($credit['data']))
-                    {
-                        $credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $credits_parent[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
-                }
-            }
-            elseif ($credits = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'credit'))
-            {
-                foreach ($credits as $credit)
-                {
-                    $credit_role = null;
-                    $credit_scheme = null;
-                    $credit_name = null;
-                    if (isset($credit['attribs']['']['role']))
-                    {
-                        $credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($credit['attribs']['']['scheme']))
-                    {
-                        $credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    else
-                    {
-                        $credit_scheme = 'urn:ebu';
-                    }
-                    if (isset($credit['data']))
-                    {
-                        $credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $credits_parent[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
-                }
-            }
-            if (is_array($credits_parent))
-            {
-                $credits_parent = array_values(SimplePie_Misc::array_unique($credits_parent));
-            }
-
-            // DESCRIPTION
-            if ($description_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'description'))
-            {
-                if (isset($description_parent[0]['data']))
-                {
-                    $description_parent = $this->sanitize($description_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-            }
-            elseif ($description_parent = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'description'))
-            {
-                if (isset($description_parent[0]['data']))
-                {
-                    $description_parent = $this->sanitize($description_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-            }
-
-            // DURATION
-            if ($duration_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'duration'))
-            {
-                $seconds = null;
-                $minutes = null;
-                $hours = null;
-                if (isset($duration_parent[0]['data']))
-                {
-                    $temp = explode(':', $this->sanitize($duration_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-                    if (sizeof($temp) > 0)
-                    {
-                        $seconds = (int) array_pop($temp);
-                    }
-                    if (sizeof($temp) > 0)
-                    {
-                        $minutes = (int) array_pop($temp);
-                        $seconds += $minutes * 60;
-                    }
-                    if (sizeof($temp) > 0)
-                    {
-                        $hours = (int) array_pop($temp);
-                        $seconds += $hours * 3600;
-                    }
-                    unset($temp);
-                    $duration_parent = $seconds;
-                }
-            }
-
-            // HASHES
-            if ($hashes_iterator = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'hash'))
-            {
-                foreach ($hashes_iterator as $hash)
-                {
-                    $value = null;
-                    $algo = null;
-                    if (isset($hash['data']))
-                    {
-                        $value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($hash['attribs']['']['algo']))
-                    {
-                        $algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    else
-                    {
-                        $algo = 'md5';
-                    }
-                    $hashes_parent[] = $algo.':'.$value;
-                }
-            }
-            elseif ($hashes_iterator = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'hash'))
-            {
-                foreach ($hashes_iterator as $hash)
-                {
-                    $value = null;
-                    $algo = null;
-                    if (isset($hash['data']))
-                    {
-                        $value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($hash['attribs']['']['algo']))
-                    {
-                        $algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    else
-                    {
-                        $algo = 'md5';
-                    }
-                    $hashes_parent[] = $algo.':'.$value;
-                }
-            }
-            if (is_array($hashes_parent))
-            {
-                $hashes_parent = array_values(SimplePie_Misc::array_unique($hashes_parent));
-            }
-
-            // KEYWORDS
-            if ($keywords = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'keywords'))
-            {
-                if (isset($keywords[0]['data']))
-                {
-                    $temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-                    foreach ($temp as $word)
-                    {
-                        $keywords_parent[] = trim($word);
-                    }
-                }
-                unset($temp);
-            }
-            elseif ($keywords = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'keywords'))
-            {
-                if (isset($keywords[0]['data']))
-                {
-                    $temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-                    foreach ($temp as $word)
-                    {
-                        $keywords_parent[] = trim($word);
-                    }
-                }
-                unset($temp);
-            }
-            elseif ($keywords = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'keywords'))
-            {
-                if (isset($keywords[0]['data']))
-                {
-                    $temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-                    foreach ($temp as $word)
-                    {
-                        $keywords_parent[] = trim($word);
-                    }
-                }
-                unset($temp);
-            }
-            elseif ($keywords = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'keywords'))
-            {
-                if (isset($keywords[0]['data']))
-                {
-                    $temp = explode(',', $this->sanitize($keywords[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-                    foreach ($temp as $word)
-                    {
-                        $keywords_parent[] = trim($word);
-                    }
-                }
-                unset($temp);
-            }
-            if (is_array($keywords_parent))
-            {
-                $keywords_parent = array_values(SimplePie_Misc::array_unique($keywords_parent));
-            }
-
-            // PLAYER
-            if ($player_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'player'))
-            {
-                if (isset($player_parent[0]['attribs']['']['url']))
-                {
-                    $player_parent = $this->sanitize($player_parent[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
-                }
-            }
-            elseif ($player_parent = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'player'))
-            {
-                if (isset($player_parent[0]['attribs']['']['url']))
-                {
-                    $player_parent = $this->sanitize($player_parent[0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
-                }
-            }
-
-            // RATINGS
-            if ($ratings = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'rating'))
-            {
-                foreach ($ratings as $rating)
-                {
-                    $rating_scheme = null;
-                    $rating_value = null;
-                    if (isset($rating['attribs']['']['scheme']))
-                    {
-                        $rating_scheme = $this->sanitize($rating['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    else
-                    {
-                        $rating_scheme = 'urn:simple';
-                    }
-                    if (isset($rating['data']))
-                    {
-                        $rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
-                }
-            }
-            elseif ($ratings = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'explicit'))
-            {
-                foreach ($ratings as $rating)
-                {
-                    $rating_scheme = 'urn:itunes';
-                    $rating_value = null;
-                    if (isset($rating['data']))
-                    {
-                        $rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
-                }
-            }
-            elseif ($ratings = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'rating'))
-            {
-                foreach ($ratings as $rating)
-                {
-                    $rating_scheme = null;
-                    $rating_value = null;
-                    if (isset($rating['attribs']['']['scheme']))
-                    {
-                        $rating_scheme = $this->sanitize($rating['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    else
-                    {
-                        $rating_scheme = 'urn:simple';
-                    }
-                    if (isset($rating['data']))
-                    {
-                        $rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
-                }
-            }
-            elseif ($ratings = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'explicit'))
-            {
-                foreach ($ratings as $rating)
-                {
-                    $rating_scheme = 'urn:itunes';
-                    $rating_value = null;
-                    if (isset($rating['data']))
-                    {
-                        $rating_value = $this->sanitize($rating['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $ratings_parent[] =& new $this->feed->rating_class($rating_scheme, $rating_value);
-                }
-            }
-            if (is_array($ratings_parent))
-            {
-                $ratings_parent = array_values(SimplePie_Misc::array_unique($ratings_parent));
-            }
-
-            // RESTRICTIONS
-            if ($restrictions = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'restriction'))
-            {
-                foreach ($restrictions as $restriction)
-                {
-                    $restriction_relationship = null;
-                    $restriction_type = null;
-                    $restriction_value = null;
-                    if (isset($restriction['attribs']['']['relationship']))
-                    {
-                        $restriction_relationship = $this->sanitize($restriction['attribs']['']['relationship'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($restriction['attribs']['']['type']))
-                    {
-                        $restriction_type = $this->sanitize($restriction['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($restriction['data']))
-                    {
-                        $restriction_value = $this->sanitize($restriction['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
-                }
-            }
-            elseif ($restrictions = $this->get_item_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'block'))
-            {
-                foreach ($restrictions as $restriction)
-                {
-                    $restriction_relationship = 'allow';
-                    $restriction_type = null;
-                    $restriction_value = 'itunes';
-                    if (isset($restriction['data']) && strtolower($restriction['data']) === 'yes')
-                    {
-                        $restriction_relationship = 'deny';
-                    }
-                    $restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
-                }
-            }
-            elseif ($restrictions = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'restriction'))
-            {
-                foreach ($restrictions as $restriction)
-                {
-                    $restriction_relationship = null;
-                    $restriction_type = null;
-                    $restriction_value = null;
-                    if (isset($restriction['attribs']['']['relationship']))
-                    {
-                        $restriction_relationship = $this->sanitize($restriction['attribs']['']['relationship'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($restriction['attribs']['']['type']))
-                    {
-                        $restriction_type = $this->sanitize($restriction['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    if (isset($restriction['data']))
-                    {
-                        $restriction_value = $this->sanitize($restriction['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                    }
-                    $restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
-                }
-            }
-            elseif ($restrictions = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'block'))
-            {
-                foreach ($restrictions as $restriction)
-                {
-                    $restriction_relationship = 'allow';
-                    $restriction_type = null;
-                    $restriction_value = 'itunes';
-                    if (isset($restriction['data']) && strtolower($restriction['data']) === 'yes')
-                    {
-                        $restriction_relationship = 'deny';
-                    }
-                    $restrictions_parent[] =& new $this->feed->restriction_class($restriction_relationship, $restriction_type, $restriction_value);
-                }
-            }
-            if (is_array($restrictions_parent))
-            {
-                $restrictions_parent = array_values(SimplePie_Misc::array_unique($restrictions_parent));
-            }
-
-            // THUMBNAILS
-            if ($thumbnails = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'thumbnail'))
-            {
-                foreach ($thumbnails as $thumbnail)
-                {
-                    if (isset($thumbnail['attribs']['']['url']))
-                    {
-                        $thumbnails_parent[] = $this->sanitize($thumbnail['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
-                    }
-                }
-            }
-            elseif ($thumbnails = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'thumbnail'))
-            {
-                foreach ($thumbnails as $thumbnail)
-                {
-                    if (isset($thumbnail['attribs']['']['url']))
-                    {
-                        $thumbnails_parent[] = $this->sanitize($thumbnail['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
-                    }
-                }
-            }
-
-            // TITLES
-            if ($title_parent = $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'title'))
-            {
-                if (isset($title_parent[0]['data']))
-                {
-                    $title_parent = $this->sanitize($title_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-            }
-            elseif ($title_parent = $parent->get_channel_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'title'))
-            {
-                if (isset($title_parent[0]['data']))
-                {
-                    $title_parent = $this->sanitize($title_parent[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                }
-            }
-
-            // Clear the memory
-            unset($parent);
-
-            // Attributes
-            $bitrate = null;
-            $channels = null;
-            $duration = null;
-            $expression = null;
-            $framerate = null;
-            $height = null;
-            $javascript = null;
-            $lang = null;
-            $length = null;
-            $medium = null;
-            $samplingrate = null;
-            $type = null;
-            $url = null;
-            $width = null;
-
-            // Elements
-            $captions = null;
-            $categories = null;
-            $copyrights = null;
-            $credits = null;
-            $description = null;
-            $hashes = null;
-            $keywords = null;
-            $player = null;
-            $ratings = null;
-            $restrictions = null;
-            $thumbnails = null;
-            $title = null;
-
-            // If we have media:group tags, loop through them.
-            foreach ((array) $this->get_item_tags(SIMPLEPIE_NAMESPACE_MEDIARSS, 'group') as $group)
-            {
-                if(isset($group['child']) && isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['content']))
-                {
-                    // If we have media:content tags, loop through them.
-                    foreach ((array) $group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['content'] as $content)
-                    {
-                        if (isset($content['attribs']['']['url']))
-                        {
-                            // Attributes
-                            $bitrate = null;
-                            $channels = null;
-                            $duration = null;
-                            $expression = null;
-                            $framerate = null;
-                            $height = null;
-                            $javascript = null;
-                            $lang = null;
-                            $length = null;
-                            $medium = null;
-                            $samplingrate = null;
-                            $type = null;
-                            $url = null;
-                            $width = null;
-
-                            // Elements
-                            $captions = null;
-                            $categories = null;
-                            $copyrights = null;
-                            $credits = null;
-                            $description = null;
-                            $hashes = null;
-                            $keywords = null;
-                            $player = null;
-                            $ratings = null;
-                            $restrictions = null;
-                            $thumbnails = null;
-                            $title = null;
-
-                            // Start checking the attributes of media:content
-                            if (isset($content['attribs']['']['bitrate']))
-                            {
-                                $bitrate = $this->sanitize($content['attribs']['']['bitrate'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['channels']))
-                            {
-                                $channels = $this->sanitize($content['attribs']['']['channels'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['duration']))
-                            {
-                                $duration = $this->sanitize($content['attribs']['']['duration'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            else
-                            {
-                                $duration = $duration_parent;
-                            }
-                            if (isset($content['attribs']['']['expression']))
-                            {
-                                $expression = $this->sanitize($content['attribs']['']['expression'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['framerate']))
-                            {
-                                $framerate = $this->sanitize($content['attribs']['']['framerate'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['height']))
-                            {
-                                $height = $this->sanitize($content['attribs']['']['height'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['lang']))
-                            {
-                                $lang = $this->sanitize($content['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['fileSize']))
-                            {
-                                $length = ceil($content['attribs']['']['fileSize']);
-                            }
-                            if (isset($content['attribs']['']['medium']))
-                            {
-                                $medium = $this->sanitize($content['attribs']['']['medium'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['samplingrate']))
-                            {
-                                $samplingrate = $this->sanitize($content['attribs']['']['samplingrate'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['type']))
-                            {
-                                $type = $this->sanitize($content['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            if (isset($content['attribs']['']['width']))
-                            {
-                                $width = $this->sanitize($content['attribs']['']['width'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            $url = $this->sanitize($content['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
-
-                            // Checking the other optional media: elements. Priority: media:content, media:group, item, channel
-
-                            // CAPTIONS
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text']))
-                            {
-                                foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text'] as $caption)
-                                {
-                                    $caption_type = null;
-                                    $caption_lang = null;
-                                    $caption_startTime = null;
-                                    $caption_endTime = null;
-                                    $caption_text = null;
-                                    if (isset($caption['attribs']['']['type']))
-                                    {
-                                        $caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['attribs']['']['lang']))
-                                    {
-                                        $caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['attribs']['']['start']))
-                                    {
-                                        $caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['attribs']['']['end']))
-                                    {
-                                        $caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['data']))
-                                    {
-                                        $caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    $captions[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
-                                }
-                                if (is_array($captions))
-                                {
-                                    $captions = array_values(SimplePie_Misc::array_unique($captions));
-                                }
-                            }
-                            elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text']))
-                            {
-                                foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['text'] as $caption)
-                                {
-                                    $caption_type = null;
-                                    $caption_lang = null;
-                                    $caption_startTime = null;
-                                    $caption_endTime = null;
-                                    $caption_text = null;
-                                    if (isset($caption['attribs']['']['type']))
-                                    {
-                                        $caption_type = $this->sanitize($caption['attribs']['']['type'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['attribs']['']['lang']))
-                                    {
-                                        $caption_lang = $this->sanitize($caption['attribs']['']['lang'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['attribs']['']['start']))
-                                    {
-                                        $caption_startTime = $this->sanitize($caption['attribs']['']['start'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['attribs']['']['end']))
-                                    {
-                                        $caption_endTime = $this->sanitize($caption['attribs']['']['end'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($caption['data']))
-                                    {
-                                        $caption_text = $this->sanitize($caption['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    $captions[] =& new $this->feed->caption_class($caption_type, $caption_lang, $caption_startTime, $caption_endTime, $caption_text);
-                                }
-                                if (is_array($captions))
-                                {
-                                    $captions = array_values(SimplePie_Misc::array_unique($captions));
-                                }
-                            }
-                            else
-                            {
-                                $captions = $captions_parent;
-                            }
-
-                            // CATEGORIES
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category']))
-                            {
-                                foreach ((array) $content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category'] as $category)
-                                {
-                                    $term = null;
-                                    $scheme = null;
-                                    $label = null;
-                                    if (isset($category['data']))
-                                    {
-                                        $term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($category['attribs']['']['scheme']))
-                                    {
-                                        $scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    else
-                                    {
-                                        $scheme = 'http://search.yahoo.com/mrss/category_schema';
-                                    }
-                                    if (isset($category['attribs']['']['label']))
-                                    {
-                                        $label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    $categories[] =& new $this->feed->category_class($term, $scheme, $label);
-                                }
-                            }
-                            if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category']))
-                            {
-                                foreach ((array) $group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['category'] as $category)
-                                {
-                                    $term = null;
-                                    $scheme = null;
-                                    $label = null;
-                                    if (isset($category['data']))
-                                    {
-                                        $term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($category['attribs']['']['scheme']))
-                                    {
-                                        $scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    else
-                                    {
-                                        $scheme = 'http://search.yahoo.com/mrss/category_schema';
-                                    }
-                                    if (isset($category['attribs']['']['label']))
-                                    {
-                                        $label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    $categories[] =& new $this->feed->category_class($term, $scheme, $label);
-                                }
-                            }
-                            if (is_array($categories) && is_array($categories_parent))
-                            {
-                                $categories = array_values(SimplePie_Misc::array_unique(array_merge($categories, $categories_parent)));
-                            }
-                            elseif (is_array($categories))
-                            {
-                                $categories = array_values(SimplePie_Misc::array_unique($categories));
-                            }
-                            elseif (is_array($categories_parent))
-                            {
-                                $categories = array_values(SimplePie_Misc::array_unique($categories_parent));
-                            }
-
-                            // COPYRIGHTS
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright']))
-                            {
-                                $copyright_url = null;
-                                $copyright_label = null;
-                                if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url']))
-                                {
-                                    $copyright_url = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                }
-                                if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data']))
-                                {
-                                    $copyright_label = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                }
-                                $copyrights =& new $this->feed->copyright_class($copyright_url, $copyright_label);
-                            }
-                            elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright']))
-                            {
-                                $copyright_url = null;
-                                $copyright_label = null;
-                                if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url']))
-                                {
-                                    $copyright_url = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                }
-                                if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data']))
-                                {
-                                    $copyright_label = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['copyright'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                }
-                                $copyrights =& new $this->feed->copyright_class($copyright_url, $copyright_label);
-                            }
-                            else
-                            {
-                                $copyrights = $copyrights_parent;
-                            }
-
-                            // CREDITS
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit']))
-                            {
-                                foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit'] as $credit)
-                                {
-                                    $credit_role = null;
-                                    $credit_scheme = null;
-                                    $credit_name = null;
-                                    if (isset($credit['attribs']['']['role']))
-                                    {
-                                        $credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($credit['attribs']['']['scheme']))
-                                    {
-                                        $credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    else
-                                    {
-                                        $credit_scheme = 'urn:ebu';
-                                    }
-                                    if (isset($credit['data']))
-                                    {
-                                        $credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    $credits[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
-                                }
-                                if (is_array($credits))
-                                {
-                                    $credits = array_values(SimplePie_Misc::array_unique($credits));
-                                }
-                            }
-                            elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit']))
-                            {
-                                foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['credit'] as $credit)
-                                {
-                                    $credit_role = null;
-                                    $credit_scheme = null;
-                                    $credit_name = null;
-                                    if (isset($credit['attribs']['']['role']))
-                                    {
-                                        $credit_role = $this->sanitize($credit['attribs']['']['role'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($credit['attribs']['']['scheme']))
-                                    {
-                                        $credit_scheme = $this->sanitize($credit['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    else
-                                    {
-                                        $credit_scheme = 'urn:ebu';
-                                    }
-                                    if (isset($credit['data']))
-                                    {
-                                        $credit_name = $this->sanitize($credit['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    $credits[] =& new $this->feed->credit_class($credit_role, $credit_scheme, $credit_name);
-                                }
-                                if (is_array($credits))
-                                {
-                                    $credits = array_values(SimplePie_Misc::array_unique($credits));
-                                }
-                            }
-                            else
-                            {
-                                $credits = $credits_parent;
-                            }
-
-                            // DESCRIPTION
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description']))
-                            {
-                                $description = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description']))
-                            {
-                                $description = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['description'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                            }
-                            else
-                            {
-                                $description = $description_parent;
-                            }
-
-                            // HASHES
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash']))
-                            {
-                                foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash'] as $hash)
-                                {
-                                    $value = null;
-                                    $algo = null;
-                                    if (isset($hash['data']))
-                                    {
-                                        $value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($hash['attribs']['']['algo']))
-                                    {
-                                        $algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    else
-                                    {
-                                        $algo = 'md5';
-                                    }
-                                    $hashes[] = $algo.':'.$value;
-                                }
-                                if (is_array($hashes))
-                                {
-                                    $hashes = array_values(SimplePie_Misc::array_unique($hashes));
-                                }
-                            }
-                            elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash']))
-                            {
-                                foreach ($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['hash'] as $hash)
-                                {
-                                    $value = null;
-                                    $algo = null;
-                                    if (isset($hash['data']))
-                                    {
-                                        $value = $this->sanitize($hash['data'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    if (isset($hash['attribs']['']['algo']))
-                                    {
-                                        $algo = $this->sanitize($hash['attribs']['']['algo'], SIMPLEPIE_CONSTRUCT_TEXT);
-                                    }
-                                    else
-                                    {
-                                        $algo = 'md5';
-                                    }
-                                    $hashes[] = $algo.':'.$value;
-                                }
-                                if (is_array($hashes))
-                                {
-                                    $hashes = array_values(SimplePie_Misc::array_unique($hashes));
-                                }
-                            }
-                            else
-                            {
-                                $hashes = $hashes_parent;
-                            }
-
-                            // KEYWORDS
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords']))
-                            {
-                                if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data']))
-                                {
-                                    $temp = explode(',', $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-                                    foreach ($temp as $word)
-                                    {
-                                        $keywords[] = trim($word);
-                                    }
-                                    unset($temp);
-                                }
-                                if (is_array($keywords))
-                                {
-                                    $keywords = array_values(SimplePie_Misc::array_unique($keywords));
-                                }
-                            }
-                            elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords']))
-                            {
-                                if (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data']))
-                                {
-                                    $temp = explode(',', $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['keywords'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT));
-                                    foreach ($temp as $word)
-                                    {
-                                        $keywords[] = trim($word);
-                                    }
-                                    unset($temp);
-                                }
-                                if (is_array($keywords))
-                                {
-                                    $keywords = array_values(SimplePie_Misc::array_unique($keywords));
-                                }
-                            }
-                            else
-                            {
-                                $keywords = $keywords_parent;
-                            }
-
-                            // PLAYER
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player']))
-                            {
-                                $player = $this->sanitize($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
-                            }
-                            elseif (isset($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player']))
-                            {
-                                $player = $this->sanitize($group['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['player'][0]['attribs']['']['url'], SIMPLEPIE_CONSTRUCT_IRI);
-                            }
-                            else
-                            {
-                                $player = $player_parent;
-                            }
-
-                            // RATINGS
-                            if (isset($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating']))
-                            {
-                                foreach ($content['child'][SIMPLEPIE_NAMESPACE_MEDIARSS]['rating'] as $rating)
-                                {
-                                    $rating_scheme = null;
-                                    $rating_value = null;
-                                    if (isset($rating['attribs']['']['scheme']))
-                                    {
-                                        $rating_scheme = $this->sanitize($rating['attribs']['']