<?php
// Variable to check
$url = "https://www.w3schools.com";
// Validate url
if (filter_var($url, FILTER_VALIDATE_URL)) {
echo("$url is a valid URL");
} else {
echo("$url is not a valid URL");
}
?>
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
https://www.w3schools.com is a valid URL