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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(), manipulate($iterator->current())); echo $iterator->key() . ' => ' . $iterator->current() . PHP_EOL; } $iterator->next(); } } function manipulate($string) { $string .= " appended"; return $string; } var_dump($myArray);
Output for 5.2.4 - 7.1.0
0 => 0 appended 0 => 0 appended 1 => 1 appended 0 => 0 appended 1 => 1 appended 2 => 2 appended 0 => 0 appended 1 => 1 appended 2 => 2 appended 3 => 3 appended 0 => the end appended array(2) { [0]=> int(0) [1]=> array(3) { [0]=> int(0) [1]=> int(1) [2]=> array(4) { [0]=> int(0) [1]=> int(1) [2]=> int(2) [3]=> array(5) { [0]=> int(0) [1]=> int(1) [2]=> int(2) [3]=> int(3) [4]=> array(1) { [0]=> string(7) "the end" } } } } }
Output for 5.2.0 - 5.2.3
0 => 0 appended 0 => 0 appended 1 => 1 appended 0 => 0 appended 1 => 1 appended 2 => 2 appended 0 => 0 appended 1 => 1 appended 2 => 2 appended 3 => 3 appended 0 => the end appended array(2) { [0]=> string(10) "0 appended" [1]=> array(3) { [0]=> string(10) "0 appended" [1]=> string(10) "1 appended" [2]=> array(4) { [0]=> string(10) "0 appended" [1]=> string(10) "1 appended" [2]=> string(10) "2 appended" [3]=> array(5) { [0]=> string(10) "0 appended" [1]=> string(10) "1 appended" [2]=> string(10) "2 appended" [3]=> string(10) "3 appended" [4]=> array(1) { [0]=> string(16) "the end appended" } } } } }
Output for 5.1.0 - 5.1.6
Fatal error: Call to undefined function iterator_apply() in /in/NDtKk on line 24
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Class 'RecursiveArrayIterator' not found in /in/NDtKk 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/NDtKk 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/NDtKk on line 23