'; echo 'window.location.href="' . rtrim(SITE_URL, '/') . '/' . ltrim($path, '/') . '";'; echo ''; echo ''; exit(); } } function validateEmail($email) { return filter_var($email, FILTER_VALIDATE_EMAIL); } function validatePhone($phone) { return preg_match('/^[0-9]{10}$/', $phone); } function sanitizeInput($input) { return htmlspecialchars(strip_tags(trim($input))); } function checkPageAccess() { $auth = new Auth(); if (!$auth->isLoggedIn()) { redirectTo('login.php'); } }