Online PHP editor | refs for DSfXH

<?php $a = array("a" => 5); $a = $c; echo !isset($a['d']['e']['f']); define(TEST, 1); define(TEST, 2); echo TEST; //$b = array('test', "deb"); //$c = array("sdf", "dsf"); //var_dump($a + $b); //class A { // protected $b = 5; //} //$a = new A(); //var_dump(json_decode(json_encode($a)));