- var_dump: documentation ( source)
- filter_var: documentation ( source)
- urlencode: documentation ( source)
<?php
$url = "https://www.bug.com/wp-content/uploads/2022/09/Famous-Internet-Man-512-" . urlencode("×") . "-512-px-1.png";
var_dump($url);
var_dump(filter_var($url, FILTER_VALIDATE_URL));
$url = "https://www.bug.com/wp-content/uploads/2022/09/Famous-Internet-Man-512-×-512-px-1.png";
var_dump($url);
var_dump(filter_var($url, FILTER_VALIDATE_URL));