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run code in 150+ php & hhvm versions
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<?php $data = array( array("id"=>3, "name"=>"peter"), array("id"=>1, "name"=>"steve"), array("id"=>5, "name"=>"damian"), array("id"=>9, "name"=>"ethan") ); $compare = function($key, $order = SORT_DESC) { return function($a, $b) use ($key, $order) { if ($order === SORT_ASC) $order = -1; else $order = 1; if (is_numeric($a[$key])) return $order * ($a[$key] - $b[$key]); if (is_string($a[$key])) return $order * strcmp($a[$key], $b[$key]); return 0; }; }; usort($data, $compare("id", SORT_ASC)); print_r($data);
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [id] => 9 [name] => ethan ) [1] => Array ( [id] => 5 [name] => damian ) [2] => Array ( [id] => 3 [name] => peter ) [3] => Array ( [id] => 1 [name] => steve ) )
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/OF4Eq 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/OF4Eq on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/OF4Eq on line 10
Process exited with code 255.