js函数 php自定义函数实现JS的escape的方法示例

//php function
function escape($string) {
    $n = $bn = $tn = 0;
    $output = '';
    $special = "-_.+@/*0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    while($n  0xff) {
           if (!preg_match("/win/i", PHP_OS))
            $charVal = substr($charVal, 2, 2).substr($charVal, 0, 2);
          $output .= '%u' . $charVal;
        }
        else {
            if(false !== strpos($special, $singleStr))
               $output .= $singleStr;
            else
               $output .="%" . dechex(ord($string[$bn]));
        }
     $bn = $n;
    }
    return $output;
}