3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = ['a', ['b', ['c']]]; function cb($i){ $i = 'z'; } function cb2(&$i) { $i = 'z'; } array_walk_recursive($a, 'cb' ); var_dump($a); array_walk_recursive($a, 'cb2' ); var_dump($a);
based on pejd9
Output for 5.4.0 - 7.1.0
array(2) { [0]=> string(1) "a" [1]=> array(2) { [0]=> string(1) "b" [1]=> array(1) { [0]=> string(1) "c" } } } array(2) { [0]=> string(1) "z" [1]=> array(2) { [0]=> string(1) "z" [1]=> array(1) { [0]=> string(1) "z" } } }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/OfgZi on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/OfgZi on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/OfgZi on line 2
Process exited with code 255.