Changeset 3712 for trunk/wp-includes/rewrite.php

Timestamp:

04/18/2006 04:47:26 AM (20 years ago)

Author:

ryan

Message:

Move url_to_postid() to rewrite.php. #2525

File:

• trunk/wp-includes/rewrite.php (modified) (1 diff)

trunk/wp-includes/rewrite.php

@@ -57 +57 @@
         global $wp_rewrite;
         $wp_rewrite->add_endpoint($name, $places);
+}
+
+// examine a url (supposedly from this blog) and try to
+// determine the post ID it represents.
+function url_to_postid($url) {
+        global $wp_rewrite;
+
+        // First, check to see if there is a 'p=N' or 'page_id=N' to match against
+        preg_match('#[?&](p|page_id)=(\d+)#', $url, $values);
+        $id = intval($values[2]);
+        if ( $id ) return $id;
+
+        // Check to see if we are using rewrite rules
+        $rewrite = $wp_rewrite->wp_rewrite_rules();
+
+        // Not using rewrite rules, and 'p=N' and 'page_id=N' methods failed, so we're out of options
+        if ( empty($rewrite) )
+                return 0;
+
+        // $url cleanup by Mark Jaquith
+        // This fixes things like #anchors, ?query=strings, missing 'www.',
+        // added 'www.', or added 'index.php/' that will mess up our WP_Query
+        // and return a false negative
+
+        // Get rid of the #anchor
+        $url_split = explode('#', $url);
+        $url = $url_split[0];
+
+        // Get rid of URI ?query=string
+        $url_split = explode('?', $url);
+        $url = $url_split[0];
+
+        // Add 'www.' if it is absent and should be there
+        if ( false !== strpos(get_settings('home'), '://www.') && false === strpos($url, '://www.') )
+                $url = str_replace('://', '://www.', $url);
+
+        // Strip 'www.' if it is present and shouldn't be
+        if ( false === strpos(get_settings('home'), '://www.') )
+                $url = str_replace('://www.', '://', $url);
+
+        // Strip 'index.php/' if we're not using path info permalinks
+        if ( false === strpos($rewrite, 'index.php/') )
+                $url = str_replace('index.php/', '', $url);
+
+        if ( false !== strpos($url, get_settings('home')) ) {
+                // Chop off http://domain.com
+                $url = str_replace(get_settings('home'), '', $url);
+        } else {
+                // Chop off /path/to/blog
+                $home_path = parse_url(get_settings('home'));
+                $home_path = $home_path['path'];
+                $url = str_replace($home_path, '', $url);
+        }
+
+        // Trim leading and lagging slashes
+        $url = trim($url, '/');
+
+        $request = $url;
+
+        // Done with cleanup
+
+        // Look for matches.
+        $request_match = $request;
+        foreach ($rewrite as $match => $query) {
+                // If the requesting file is the anchor of the match, prepend it
+                // to the path info.
+                if ( (! empty($url)) && (strpos($match, $url) === 0) ) {
+                        $request_match = $url . '/' . $request;
+                }
+
+                if ( preg_match("!^$match!", $request_match, $matches) ) {
+                        // Got a match.
+                        // Trim the query of everything up to the '?'.
+                        $query = preg_replace("!^.+\?!", '', $query);
+
+                        // Substitute the substring matches into the query.
+                        eval("\$query = \"$query\";");
+                        $query = new WP_Query($query);
+                        if ( $query->is_single || $query->is_page )
+                                return $query->post->ID;
+                        else
+                                return 0;
+                }
+        }
+        return 0;
 }