3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ [1, 30, 33, ['id' => 5] ]; $result = array_reduce($array, function (array $result, array $array) { return array_merge($result, array_map(function ($id) { return compact('id'); }, $array); }, []); var_dump($result);
Output for 5.4.0 - 5.4.29
Parse error: syntax error, unexpected ';', expecting ']' in /in/75iLL on line 6
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected '[' in /in/75iLL on line 3
Process exited with code 255.
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182.88 ms | 1395 KiB | 66 Q