3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array(); $arr[] = array(1 => array(2 => 2, 3 => array(4 => 4, 5 => 5)), 6 => 6); function showArray(&$arr) { echo('<pre>'.print_r($arr,true).'</pre>'); } array_walk_recursive($arr, 'showArrow');
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: array_walk_recursive(): Argument #2 ($callback) must be a valid callback, function "showArrow" not found or invalid function name in /in/qgRtk:9 Stack trace: #0 /in/qgRtk(9): array_walk_recursive(Array, 'showArrow') #1 {main} thrown in /in/qgRtk on line 9
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_walk_recursive() expects parameter 2 to be a valid callback, function 'showArrow' not found or invalid function name in /in/qgRtk on line 9
Output for 5.0.1 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: array_walk_recursive(): Unable to call showArrow() - function does not exist in /in/qgRtk on line 9 Warning: array_walk_recursive(): Unable to call showArrow() - function does not exist in /in/qgRtk on line 9
Output for 5.0.0
Warning: array_walk_recursive(): Unable to call showArrow() - function does not exist in /in/qgRtk on line 9
Process exited with code 139.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_walk_recursive() in /in/qgRtk on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: array_walk_recursive() in /in/qgRtk on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_walk_recursive() in /in/qgRtk on line 9
preferences:
329.75 ms | 401 KiB | 460 Q