php 过滤字符串中的HTML代码

Posted 2021-05-04

   public static function shtmlspecialchars($string) {
        if(empty($string)) return '';

        if(is_array($string)) {
            foreach($string as $key => $val) {
                $string[$key] = self::shtmlspecialchars($val);
            }
        } else {
            $string = preg_replace('/&((#(\d{3,5}|x[a-fA-F0-9]{4})|[a-zA-Z][a-z0-9]{2,5});)/', '&\\1',
                str_replace(array('&', '"', '<', '>'), array('&amp;', '&quot;', '&lt;', '&gt;'), $string));

            $string = htmlspecialchars_decode($string);
            $string = stripslashes($string);
        }
        return $string;
    }