Cache redirects?

}else if(isset($_GET["preview"])){
				return $buffer."<!-- not cached -->";
			}else if($this->checkHtml($buffer)){
				return $buffer."<!-- html is corrupted -->";
			}else if(http_response_code() == 301 || http_response_code() == 302){
				return $buffer;
			}else{

I added like that. is it ok?

Yes ?? Thank You very much! ??

thank you too ??

Your code caused the problem ?? so I added the following condition.

function_exists("http_response_code")

Uhm, this function is available for PHP >= 5.4.0 – I didn’t realize that someone can use such old version of PHP ??

??