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<!DOCTYPE html> <html> <body> <?php // Variable to check $url = "../index.html"; // Validate url if (filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_QUERY_REQUIRED)) { echo("$url is a valid URL"); } else { echo("$url is not a valid URL"); } ?> </body> </html>
https://www.unlockfuture.com is not a valid URL