<html><body>// Variable to check$url = "../index.html";// Validate urlif (filter_var($url, FILTER_VALIDATE_URL)) { echo("$url is a valid URL");} else { echo("$url is not a valid URL");}</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_validate_url by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:14:40 GMT --></html>