php过滤非法字符函数
php过滤一些非法字符,对于的字符,可以自己自定义添加
//过滤非法内容
function glstr($var)
{
        if(strlen($var))
        {
                $var = trim($var);
                $var = str_replace("'","",$var);
                $var = str_replace("=","",$var);
                //$var = str_replace("%","",$var);
                $var = str_replace("<","<",$var);
                $var = str_replace(">",">",$var);
                $var = str_replace("\"",""",$var);
                $var = get_magic_quotes_gpc()?$var:addslashes($var);
                return $var;
                
        }
        return $var;
}本文作者: Liaodeity
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