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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