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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = new ArrayObject(); var_dump($a->getIterator());
Output for 5.3.0 - 5.6.21, 7.0.0 - 7.1.0
object(ArrayIterator)#2 (1) { ["storage":"ArrayIterator":private]=> object(ArrayObject)#1 (1) { ["storage":"ArrayObject":private]=> array(0) { } } }
Output for hhvm-3.12.0
object(ArrayIterator)#2 (2) { ["storage":"ArrayIterator":private]=> array(0) { } ["flags":"ArrayIterator":private]=> int(0) }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.2.17
object(ArrayIterator)#2 (0) { }
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/5kCTc on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/5kCTc on line 3