| 1 | | <?php |
| 2 | | /** |
| 3 | | * WordPress implementation for PHP functions missing from older PHP versions. |
| 4 | | * |
| 5 | | * @package PHP |
| 6 | | * @access private |
| 7 | | */ |
| 8 | | |
| 9 | | // Added in PHP 5.0 |
| 10 | | |
| 11 | | if (!function_exists('http_build_query')) { |
| 12 | | function http_build_query($data, $prefix=null, $sep=null) { |
| 13 | | return _http_build_query($data, $prefix, $sep); |
| 14 | | } |
| 15 | | } |
| 16 | | |
| 17 | | // from php.net (modified by Mark Jaquith to behave like the native PHP5 function) |
| 18 | | function _http_build_query($data, $prefix=null, $sep=null, $key='', $urlencode=true) { |
| 19 | | $ret = array(); |
| 20 | | |
| 21 | | foreach ( (array) $data as $k => $v ) { |
| 22 | | if ( $urlencode) |
| 23 | | $k = urlencode($k); |
| 24 | | if ( is_int($k) && $prefix != null ) |
| 25 | | $k = $prefix.$k; |
| 26 | | if ( !empty($key) ) |
| 27 | | $k = $key . '%5B' . $k . '%5D'; |
| 28 | | if ( $v === NULL ) |
| 29 | | continue; |
| 30 | | elseif ( $v === FALSE ) |
| 31 | | $v = '0'; |
| 32 | | |
| 33 | | if ( is_array($v) || is_object($v) ) |
| 34 | | array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode)); |
| 35 | | elseif ( $urlencode ) |
| 36 | | array_push($ret, $k.'='.urlencode($v)); |
| 37 | | else |
| 38 | | array_push($ret, $k.'='.$v); |
| 39 | | } |
| 40 | | |
| 41 | | if ( NULL === $sep ) |
| 42 | | $sep = ini_get('arg_separator.output'); |
| 43 | | |
| 44 | | return implode($sep, $ret); |
| 45 | | } |
| 46 | | |
| 47 | | if ( !function_exists('_') ) { |
| 48 | | function _($string) { |
| 49 | | return $string; |
| 50 | | } |
| 51 | | } |
| 52 | | |
| 53 | | if (!function_exists('stripos')) { |
| 54 | | function stripos($haystack, $needle, $offset = 0) { |
| 55 | | return strpos(strtolower($haystack), strtolower($needle), $offset); |
| 56 | | } |
| 57 | | } |
| 58 | | |
| 59 | | if ( !function_exists('hash_hmac') ): |
| 60 | | function hash_hmac($algo, $data, $key, $raw_output = false) { |
| 61 | | return _hash_hmac($algo, $data, $key, $raw_output); |
| 62 | | } |
| 63 | | endif; |
| 64 | | |
| 65 | | function _hash_hmac($algo, $data, $key, $raw_output = false) { |
| 66 | | $packs = array('md5' => 'H32', 'sha1' => 'H40'); |
| 67 | | |
| 68 | | if ( !isset($packs[$algo]) ) |
| 69 | | return false; |
| 70 | | |
| 71 | | $pack = $packs[$algo]; |
| 72 | | |
| 73 | | if (strlen($key) > 64) |
| 74 | | $key = pack($pack, $algo($key)); |
| 75 | | |
| 76 | | $key = str_pad($key, 64, chr(0)); |
| 77 | | |
| 78 | | $ipad = (substr($key, 0, 64) ^ str_repeat(chr(0x36), 64)); |
| 79 | | $opad = (substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64)); |
| 80 | | |
| 81 | | $hmac = $algo($opad . pack($pack, $algo($ipad . $data))); |
| 82 | | |
| 83 | | if ( $raw_output ) |
| 84 | | return pack( $pack, $hmac ); |
| 85 | | return $hmac; |
| 86 | | } |
| 87 | | |
| 88 | | if ( !function_exists('mb_substr') ): |
| 89 | | function mb_substr( $str, $start, $length=null, $encoding=null ) { |
| 90 | | return _mb_substr($str, $start, $length, $encoding); |
| 91 | | } |
| 92 | | endif; |
| 93 | | |
| 94 | | function _mb_substr( $str, $start, $length=null, $encoding=null ) { |
| 95 | | // the solution below, works only for utf-8, so in case of a different |
| 96 | | // charset, just use built-in substr |
| 97 | | $charset = get_option( 'blog_charset' ); |
| 98 | | if ( !in_array( $charset, array('utf8', 'utf-8', 'UTF8', 'UTF-8') ) ) { |
| 99 | | return is_null( $length )? substr( $str, $start ) : substr( $str, $start, $length); |
| 100 | | } |
| 101 | | // use the regex unicode support to separate the UTF-8 characters into an array |
| 102 | | preg_match_all( '/./us', $str, $match ); |
| 103 | | $chars = is_null( $length )? array_slice( $match[0], $start ) : array_slice( $match[0], $start, $length ); |
| 104 | | return implode( '', $chars ); |
| 105 | | } |
| 106 | | |
| 107 | | if ( !function_exists( 'htmlspecialchars_decode' ) ) { |
| 108 | | // Added in PHP 5.1.0 |
| 109 | | // Error checks from PEAR::PHP_Compat |
| 110 | | function htmlspecialchars_decode( $string, $quote_style = ENT_COMPAT ) |
| 111 | | { |
| 112 | | if ( !is_scalar( $string ) ) { |
| 113 | | trigger_error( 'htmlspecialchars_decode() expects parameter 1 to be string, ' . gettype( $string ) . ' given', E_USER_WARNING ); |
| 114 | | return; |
| 115 | | } |
| 116 | | |
| 117 | | if ( !is_int( $quote_style ) && $quote_style !== null ) { |
| 118 | | trigger_error( 'htmlspecialchars_decode() expects parameter 2 to be integer, ' . gettype( $quote_style ) . ' given', E_USER_WARNING ); |
| 119 | | return; |
| 120 | | } |
| 121 | | |
| 122 | | return wp_specialchars_decode( $string, $quote_style ); |
| 123 | | } |
| 124 | | } |
| 125 | | |
| 126 | | // For PHP < 5.2.0 |
| 127 | | if ( !function_exists('json_encode') ) { |
| 128 | | function json_encode( $string ) { |
| 129 | | global $wp_json; |
| 130 | | |
| 131 | | if ( !is_a($wp_json, 'Services_JSON') ) { |
| 132 | | require_once( ABSPATH . WPINC . '/class-json.php' ); |
| 133 | | $wp_json = new Services_JSON(); |
| 134 | | } |
| 135 | | |
| 136 | | return $wp_json->encodeUnsafe( $string ); |
| 137 | | } |
| 138 | | } |
| 139 | | |
| 140 | | if ( !function_exists('json_decode') ) { |
| 141 | | function json_decode( $string, $assoc_array = false ) { |
| 142 | | global $wp_json; |
| 143 | | |
| 144 | | if ( !is_a($wp_json, 'Services_JSON') ) { |
| 145 | | require_once( ABSPATH . WPINC . '/class-json.php' ); |
| 146 | | $wp_json = new Services_JSON(); |
| 147 | | } |
| 148 | | |
| 149 | | $res = $wp_json->decode( $string ); |
| 150 | | if ( $assoc_array ) |
| 151 | | $res = _json_decode_object_helper( $res ); |
| 152 | | return $res; |
| 153 | | } |
| 154 | | function _json_decode_object_helper($data) { |
| 155 | | if ( is_object($data) ) |
| 156 | | $data = get_object_vars($data); |
| 157 | | return is_array($data) ? array_map(__FUNCTION__, $data) : $data; |
| 158 | | } |
| 159 | | } |
| 160 | | |
| 161 | | // pathinfo that fills 'filename' without extension like in PHP 5.2+ |
| 162 | | function pathinfo52($path) { |
| 163 | | $parts = pathinfo($path); |
| 164 | | if ( !isset($parts['filename']) ) { |
| 165 | | $parts['filename'] = substr( $parts['basename'], 0, strrpos($parts['basename'], '.') ); |
| 166 | | if ( empty($parts['filename']) ) // there's no extension |
| 167 | | $parts['filename'] = $parts['basename']; |
| 168 | | } |
| 169 | | return $parts; |
| 170 | | } |