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<?php $myArray = array( "a", array( "a", "b", array( "a", "b", "c", new ArrayObject( "a", "b", "c", "d", array("the end") ) ) ) ); $recursive_array_iterator = new RecursiveArrayIterator(new ArrayObject($myArray)); iterator_apply($recursive_array_iterator, 'traverseRecursiveArray', array($recursive_array_iterator)); var_dump($recursive_array_iterator); function traverseRecursiveArray($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 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught ArgumentCountError: ArrayObject::__construct() expects at most 3 arguments, 5 given in /in/8FMcf:12 Stack trace: #0 /in/8FMcf(12): ArrayObject->__construct('a', 'b', 'c', 'd', Array) #1 {main} thrown in /in/8FMcf on line 12
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught ArgumentCountError: ArrayObject::__construct() expects at most 3 arguments, 5 given in /in/8FMcf:12 Stack trace: #0 /in/8FMcf(12): ArrayObject->__construct('a', 'b', 'c', 'd', Array) #1 {main} thrown in /in/8FMcf on line 12
Process exited with code 255.
Output for 8.1.0 - 8.1.28
Fatal error: Uncaught ArgumentCountError: ArrayObject::__construct() expects at most 3 arguments, 5 given in /in/8FMcf:4 Stack trace: #0 /in/8FMcf(4): ArrayObject->__construct('a', 'b', 'c', 'd', Array) #1 {main} thrown in /in/8FMcf on line 4
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught ArgumentCountError: ArrayObject::__construct() expects at most 3 arguments, 5 given in /in/8FMcf:17 Stack trace: #0 /in/8FMcf(17): ArrayObject->__construct('a', 'b', 'c', 'd', Array) #1 {main} thrown in /in/8FMcf on line 17
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught ArgumentCountError: ArrayObject::__construct() expects at most 3 parameters, 5 given in /in/8FMcf:17 Stack trace: #0 /in/8FMcf(17): ArrayObject->__construct('a', 'b', 'c', 'd', Array) #1 {main} thrown in /in/8FMcf on line 17
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Fatal error: Uncaught TypeError: ArrayObject::__construct() expects at most 3 parameters, 5 given in /in/8FMcf:17 Stack trace: #0 /in/8FMcf(17): ArrayObject->__construct('a', 'b', 'c', 'd', Array) #1 {main} thrown in /in/8FMcf on line 17
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Fatal error: Uncaught exception 'InvalidArgumentException' with message 'ArrayObject::__construct() expects at most 3 parameters, 5 given' in /in/8FMcf:18 Stack trace: #0 /in/8FMcf(18): ArrayObject->__construct('a', 'b', 'c', 'd', Array) #1 {main} thrown in /in/8FMcf on line 18
Process exited with code 255.
Output for 5.0.4 - 5.0.5

Process exited with code 139.
Output for 5.0.0 - 5.0.3
Warning: Wrong parameter count for __construct() in /in/8FMcf on line 18 Fatal error: Class 'RecursiveArrayIterator' not found in /in/8FMcf on line 23
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/8FMcf on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/8FMcf on line 12
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