3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = array( array( array( array( 'leaf-0-0-0-0' => array ( 'whawtever' ), 'leaf-0-0-0-1' ), 'leaf-0-0-0' ), array( array( 'leaf-0-1-0-0', 'leaf-0-1-0-1' ), 'leaf-0-1-0' ), 'leaf-0-0' ) ); $iterator = new RecursiveIteratorIterator( new RecursiveArrayIterator($array), '' ); foreach ($iterator as $key => $leaf) { echo "$key => $leaf", PHP_EOL; }
based on 1WEtf
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught InvalidArgumentException: An instance of RecursiveIterator or IteratorAggregate creating it is required in /in/Ln0pB:27 Stack trace: #0 /in/Ln0pB(27): RecursiveIteratorIterator->__construct(Object(RecursiveArrayIterator), '') #1 {main} thrown in /in/Ln0pB on line 27
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Fatal error: Uncaught exception 'InvalidArgumentException' with message 'An instance of RecursiveIterator or IteratorAggregate creating it is required' in /in/Ln0pB:28 Stack trace: #0 /in/Ln0pB(28): RecursiveIteratorIterator->__construct(Object(RecursiveArrayIterator), '') #1 {main} thrown in /in/Ln0pB on line 28
Process exited with code 255.