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run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = array( array("id"=>3, "name"=>"peter"), array("id"=>1, "name"=>"steve"), array("id"=>5, "name"=>"damian"), array("id"=>9, "name"=>"ethan") ); $c = function($a, $b) { return 0; }; //usort($data, $c); print_r($data);
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [id] => 3 [name] => peter ) [1] => Array ( [id] => 1 [name] => steve ) [2] => Array ( [id] => 5 [name] => damian ) [3] => Array ( [id] => 9 [name] => ethan ) )
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/hHuKN on line 10
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/hHuKN on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/hHuKN on line 10
Process exited with code 255.