3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $myArray = array( 0, array( 0, 1, array( 0, 1, 2, array( 0, 1, 2, 3, array("the end") ) ) ) ); $recursive_array_iterator = new RecursiveArrayIterator($myArray); iterator_apply($recursive_array_iterator, 'traverseRecursiveArray', array($recursive_array_iterator)); function traverseRecursiveArray($iterator) { $i = 0; while ($iterator->valid()) { if ($iterator->hasChildren()) { traverseRecursiveArray($iterator->getChildren()); } else { $iterator->offsetSet($iterator->key(), $i++); echo $iterator->key() . ' => ' . $iterator->current() . PHP_EOL; } echo "!!$i!!" . PHP_EOL; // $iterator->current = "d"; $iterator->next(); } }
Output for 5.2.0 - 7.1.0
0 => 0 !!1!! 0 => 0 !!1!! 1 => 1 !!2!! 0 => 0 !!1!! 1 => 1 !!2!! 2 => 2 !!3!! 0 => 0 !!1!! 1 => 1 !!2!! 2 => 2 !!3!! 3 => 3 !!4!! 0 => 0 !!1!! !!4!! !!3!! !!2!! !!1!!
Output for 5.1.0 - 5.1.6
Fatal error: Call to undefined function iterator_apply() in /in/8lG7c on line 24
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Class 'RecursiveArrayIterator' not found in /in/8lG7c on line 23
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: recursivearrayiterator in /in/8lG7c on line 23
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: recursivearrayiterator in /in/8lG7c on line 23