Spam in search log

Now I use

/**** START  */ 
		function search_filter_spam($query) {			
			if ($query->is_search ) {			
				$url =  get_search_query('s');
				$regex = "((https?|ftp)\:\/\/)?"; // SCHEME 
				$regex .= "([a-z0-9+!*(),;?&=\$_.-]+(\:[a-z0-9+!*(),;?&=\$_.-]+)?@)?"; // User and Pass 
				$regex .= "([a-z0-9-.]*)\.([a-z]{2,3})"; // Host or IP 
				$regex .= "(\:[0-9]{2,5})?"; // Port 
				$regex .= "(\/([a-z0-9+\$_-]\.?)+)*\/?"; // Path 
				$regex .= "(\?[a-z+&\$_.-][a-z0-9;:@&%=+\/\$_.-]*)?"; // GET Query 
				$regex .= "(#[a-z_.-][a-z0-9+\$_.-]*)?"; // Anchor 

				if(preg_match("/^$regex$/i", $url)) { // <code>i</code> flag for case-insensitive
			//	if(get_headers($url, 1)){
				   echo 'Stop SPAM!';
				   exit();
				}
			}			
		}
		add_action('pre_get_posts', 'search_filter_spam');	

Maybe there are other solutions, more correct.

• This reply was modified 4 years, 11 months ago by kolshix.
• This reply was modified 4 years, 11 months ago by kolshix.

))))
the funny thing is that I was also attacked by Chinese spammers.
All domains led to Chinese sites

• This reply was modified 4 years, 11 months ago by kolshix.