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PHP Filters Advanced

Validate URL - Must Contain QueryString

https://www.w3schools.com is not a valid URL with a query string

<?php
// Variable to check
$url = "https://www.w3schools.com";

// Validate url
if (!filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_QUERY_REQUIRED) === false) {
  echo("$url is a valid URL with a query string");
} else {
  echo("$url is not a valid URL with a query string");
}
?>