phpcms 不支持iframe怎么办

function trim_script($str) {
if(is_array($str)){
foreach ($str as $key => $val){
$str[$key] = trim_script($val);
}
}else{
$str = preg_replace ( &#39;/\<([\/]?)script([^\>]*?)\>/si&#39;, &#39;<\\script\\2>&#39;, $str );
$str = preg_replace ( &#39;/\<([\/]?)iframe([^\>]*?)\>/si&#39;, &#39;<\\iframe\\2>&#39;, $str );
$str = preg_replace ( &#39;/\<([\/]?)frame([^\>]*?)\>/si&#39;, &#39;<\\frame\\2>&#39;, $str );
$str = str_replace ( &#39;javascript：&#39;, &#39;javascript：&#39;, $str );
}
return $str;
}

function trim_script($str) {
if(is_array($str)){
foreach ($str as $key => $val){
$str[$key] = trim_script($val);
}
}else{
//$str = preg_replace ( &#39;/\<([\/]?)script([^\>]*?)\>/si&#39;, &#39;<\\script\\2>&#39;, $str );
//$str = preg_replace ( &#39;/\<([\/]?)iframe([^\>]*?)\>/si&#39;, &#39;<\\iframe\\2>&#39;, $str );
//$str = preg_replace ( &#39;/\<([\/]?)frame([^\>]*?)\>/si&#39;, &#39;<\\frame\\2>&#39;, $str );
$str = str_replace ( &#39;javascript：&#39;, &#39;javascript：&#39;, $str );
}
return $str;
}