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<?php $myArray = array( "a", array( "a", "b", array( "a", "b", "c", array( "a", "b", "c", "d", array("the end") ) ) ) ); $recursive_array_iterator = new ArrayObject(new RecursiveArrayIterator($myArray)); iterator_apply(array($recursive_array_iterator), 'traverseRecursiveArray', array($recursive_array_iterator)); function traverseRecursiveArray($iterator) { while ($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 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: iterator_apply(): Argument #1 ($iterator) must be of type Traversable, array given in /in/ETDeQ:24 Stack trace: #0 /in/ETDeQ(24): iterator_apply(Array, 'traverseRecursi...', Array) #1 {main} thrown in /in/ETDeQ on line 24
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 1 passed to iterator_apply() must implement interface Traversable, array given in /in/ETDeQ:24 Stack trace: #0 /in/ETDeQ(24): iterator_apply(Array, 'traverseRecursi...', Array) #1 {main} thrown in /in/ETDeQ on line 24
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21
Catchable fatal error: Argument 1 passed to iterator_apply() must implement interface Traversable, array given in /in/ETDeQ on line 24
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Fatal error: Call to undefined function iterator_apply() in /in/ETDeQ on line 24
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Class 'RecursiveArrayIterator' not found in /in/ETDeQ 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/ETDeQ on line 23
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/ETDeQ on line 23
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215.09 ms | 401 KiB | 312 Q