php check if url is valid code example

Example 1: check if valid url php

filter_var($url, FILTER_VALIDATE_URL);

Example 2: how to check if a url is up php

<?php
$url = 'http://google.com';

if(@file_get_contents($url)){
	
	echo "Website is up";
	
} else {
	
	echo "Website is down";
	
}

?>