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run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = array( array(1, 30, 33), array('id' => 5) ); $result = array(); array_walk_recursive( $data, function($value) use (&$result) { $result[] = array('id' => $value); } ); print_r($result);
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [id] => 1 ) [1] => Array ( [id] => 30 ) [2] => Array ( [id] => 33 ) [3] => Array ( [id] => 5 ) )
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/CdQaB on line 11
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 T_FUNCTION in /in/CdQaB on line 11
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/CdQaB on line 11
Process exited with code 255.