- var_dump: documentation ( source)
<?php
//$a = array("a" => 5);
//$a = $c;
//echo !isset($a['d']['e']['f']);
$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)));