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run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array('foo' => 'bar', 'baz' => 'bat'); array_walk($array, function($val,$key) use(&$array){ if ($val == 'bar') { unset($array[$key]); } }); print_r($array);
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [baz] => bat )
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/8po7Y on line 4
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/8po7Y on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/8po7Y on line 4
Process exited with code 255.