Online PHP editor | refs for K32Gb

<?php error_reporting(E_ALL); trait Hello { public function sayHelloWorld() { echo 'Hello'.$this->getWorld(); } abstract public function getWorld(); } class MyHelloWorld { private $world; use Hello; public function getWorld() { return $this->world; } public function setWorld($val) { $this->world = $val; } } $o = new MyHelloWorld(); $o->setWorld(' World!'); $o->sayHelloWorld();