<html><body>class Goodbye { const LEAVING_MESSAGE = "Thank you for visiting W3Schools.com!"; public function byebye() { echo self::LEAVING_MESSAGE; }}$goodbye = new Goodbye();$goodbye->byebye();</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_class_constant2 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:50:49 GMT --></html>