Ham - Ham thay the hang loat ki tu

function XuLyDau($chuoi){

$kitudacbiet   = array("<p>", "<span>","<br />", "</span>","</p>","<p>","<h3>","</h3>","</hr>","<br>","<blockquote>","<u>","</u>","</blockquote>");
$chuoi = str_replace($kitudacbiet,"",$chuoi);
return $chuoi ;

        }