| 1 | <?php
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| 2 | /**
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| 3 | * WordPress implementation for PHP functions missing from older PHP versions.
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| 4 | *
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| 5 | * @package PHP
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| 6 | * @access private
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| 7 | */
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| 8 |
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| 9 | // Added in PHP 5.0
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| 10 |
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| 11 | if (!function_exists('http_build_query')) {
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| 12 | function http_build_query($data, $prefix=null, $sep=null) {
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| 13 | return _http_build_query($data, $prefix, $sep);
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| 14 | }
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| 15 | }
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| 16 |
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| 17 | // from php.net (modified by Mark Jaquith to behave like the native PHP5 function)
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| 18 | function _http_build_query($data, $prefix=null, $sep=null, $key='', $urlencode=true) {
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| 19 | $ret = array();
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| 20 |
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| 21 | foreach ( (array) $data as $k => $v ) {
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| 22 | if ( $urlencode)
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| 23 | $k = urlencode($k);
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| 24 | if ( is_int($k) && $prefix != null )
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| 25 | $k = $prefix.$k;
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| 26 | if ( !empty($key) )
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| 27 | $k = $key . '%5B' . $k . '%5D';
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| 28 | if ( $v === NULL )
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| 29 | continue;
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| 30 | elseif ( $v === FALSE )
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| 31 | $v = '0';
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| 32 |
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| 33 | if ( is_array($v) || is_object($v) )
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| 34 | array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode));
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| 35 | elseif ( $urlencode )
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| 36 | array_push($ret, $k.'='.urlencode($v));
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| 37 | else
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| 38 | array_push($ret, $k.'='.$v);
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| 39 | }
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| 40 |
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| 41 | if ( NULL === $sep )
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| 42 | $sep = ini_get('arg_separator.output');
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| 43 |
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| 44 | return implode($sep, $ret);
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| 45 | }
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| 46 |
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| 47 | if ( !function_exists('_') ) {
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| 48 | function _($string) {
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| 49 | return $string;
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| 50 | }
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| 51 | }
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| 52 |
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| 53 | if (!function_exists('stripos')) {
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| 54 | function stripos($haystack, $needle, $offset = 0) {
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| 55 | return strpos(strtolower($haystack), strtolower($needle), $offset);
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| 56 | }
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| 57 | }
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| 58 |
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| 59 | if ( ! function_exists('hash_hmac') ):
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| 60 | function hash_hmac($algo, $data, $key, $raw_output = false) {
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| 61 | $packs = array('md5' => 'H32', 'sha1' => 'H40');
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| 62 |
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| 63 | if ( !isset($packs[$algo]) )
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| 64 | return false;
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| 65 |
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| 66 | $pack = $packs[$algo];
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| 67 |
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| 68 | if (strlen($key) > 64)
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| 69 | $key = pack($pack, $algo($key));
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| 70 | else if (strlen($key) < 64)
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| 71 | $key = str_pad($key, 64, chr(0));
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| 72 |
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| 73 | $ipad = (substr($key, 0, 64) ^ str_repeat(chr(0x36), 64));
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| 74 | $opad = (substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64));
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| 75 |
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| 76 | return $algo($opad . pack($pack, $algo($ipad . $data)));
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| 77 | }
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| 78 | endif;
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| 79 |
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| 80 | if ( ! function_exists('mb_substr') ):
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| 81 | function mb_substr( $str, $start, $length=null, $encoding=null ) {
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| 82 | return _mb_substr($str, $start, $length, $encoding);
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| 83 | }
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| 84 | endif;
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| 85 |
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| 86 | function _mb_substr( $str, $start, $length=null, $encoding=null ) {
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| 87 | // the solution below, works only for utf-8, so in case of a different
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| 88 | // charset, just use built-in substr
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| 89 | $charset = get_option( 'blog_charset' );
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| 90 | if ( !in_array( $charset, array('utf8', 'utf-8', 'UTF8', 'UTF-8') ) ) {
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| 91 | return is_null( $length )? substr( $str, $start ) : substr( $str, $start, $length);
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| 92 | }
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| 93 | // use the regex unicode support to separate the UTF-8 characters into an array
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| 94 | preg_match_all( '/./us', $str, $match );
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| 95 | $chars = is_null( $length )? array_slice( $match[0], $start ) : array_slice( $match[0], $start, $length );
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| 96 | return implode( '', $chars );
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| 97 | }
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| 98 |
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| 99 | if ( !function_exists( 'htmlspecialchars_decode' ) ) {
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| 100 | // Added in PHP 5.1.0
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| 101 | // Error checks from PEAR::PHP_Compat
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| 102 | function htmlspecialchars_decode( $string, $quote_style = ENT_COMPAT )
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| 103 | {
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| 104 | if ( !is_scalar( $string ) ) {
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| 105 | trigger_error( 'htmlspecialchars_decode() expects parameter 1 to be string, ' . gettype( $string ) . ' given', E_USER_WARNING );
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| 106 | return;
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| 107 | }
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| 108 |
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| 109 | if ( !is_int( $quote_style ) && $quote_style !== null ) {
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| 110 | trigger_error( 'htmlspecialchars_decode() expects parameter 2 to be integer, ' . gettype( $quote_style ) . ' given', E_USER_WARNING );
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| 111 | return;
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| 112 | }
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| 113 |
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| 114 | return wp_specialchars_decode( $string, $quote_style );
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| 115 | }
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| 116 | }
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| 117 |
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| 118 | ?>
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