PHP decoding JS using the escape transcoding function

PHP decoding JS using the escape transcoding function

/*** function and JS unescape function, decode the data after escape encoded * @param $str */function unescape ($str) {$ret = ';    $len = strlen ($STR);             for ($i = 0; $i < $len; $i + +) {if ($str [$i] = = '% ' && $str [$i + 1] = = ' U ') {            $val = Hexdec (substr ($str, $i + 2, 4));            if ($val < 0x7f) $ret. = Chr ($val); else if ($val < 0x800) $ret. = Chr (0xc0 | ($val >> 6))                     . Chr (0x80 |                ($val & 0x3f)); else $ret. = Chr (0xe0 | ($val >> 12))                     . Chr (0x80 | (($val >> 6) & 0x3f))                     . Chr (0x80 |            ($val & 0x3f));        $i + = 5;                } else if ($str [$i] = = '% ') {$ret. = UrlDecode (substr ($str, $i, 3));            $i + = 2;    } else $ret. = $str [$i]; } return $ret;} /*** function is JS escape PHP implementation * @param $string thE Sting want to be escaped* @param $in _encoding * @param $out _encoding */function Escape ($string, $in _encoding =    ' UTF-8 ', $out _encoding = ' UCS-2 ') {$return = ';             if (function_exists (' Mb_get_info ')) {for ($x = 0; $x < Mb_strlen ($string, $in _encoding); $x + +) {            $str = Mb_substr ($string, $x, 1, $in _encoding);  if (strlen ($STR) > 1) {//multibyte character $return. = '%u '. Strtoupper (Bin2Hex (mb_convert_encoding ($STR,            $out _encoding, $in _encoding)));            } else {$return. = '% '. Strtoupper (Bin2Hex ($STR)); }}} return $return;}

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