static function validate_url_type($slug, $req) { // validates extra fiedld type that is url if ('true' == $req) { if (!FSCF_Util::validate_url(self::$form_data[$slug])) { self::$form_errors[$slug] = self::$form_options['error_url'] != '' ? self::$form_options['error_url'] : __('Invalid URL.', 'si-contact-form'); } } else { if (!empty(self::$form_data[$slug])) { if (!FSCF_Util::validate_url(self::$form_data[$slug])) { // was not required but something filled it, so ckeck self::$form_errors[$slug] = self::$form_options['error_url'] != '' ? self::$form_options['error_url'] : __('Invalid URL.', 'si-contact-form'); } } } }