- var_dump: documentation ( source)
- error_reporting: documentation ( source)
<?php error_reporting(E_ALL);
$a = new ArrayObject();
$b = [];
$a[null]['hurr'] = 'durr';
var_dump($a['epic_magic']);
var_dump($b['epic_magic']);
var_dump($c['epic_magic']); // Undefined var!!
$d = [];
var_dump($a['epic_magic']); // more magic!
var_dump($d['epic_magic']);
$e = 'srsly?';
var_dump($a['epic_magic']); // srsly.