session_start(); //error_reporting(E_ALL); // Report all PHP errors //ini_set('display_errors', 1); // Display errors on the screen // Capture UTM parameters from $_GET and store in $_SESSION $utm_params = ['utm_id', 'utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content']; foreach ($utm_params as $param) { if (isset($_GET[$param]) && !empty($_GET[$param])) { $_SESSION[$param] = htmlspecialchars(trim($_GET[$param])); } } ?>