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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 ?> |