3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ['name' => 'foo'], ]; usort($array, function ($a, $b) { return strcmp($a['name'], $b['nope']); }); echo 'after calling usort:'.PHP_EOL.PHP_EOL; var_dump($array);

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24.42 ms | 406 KiB | 5 Q