3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = $arr2 = array( /* 0 */ array( 'A' , 'B' , 'C' ), /* 1 */ array( 'A' , 'C' , 'B' ), /* 2 */ array( 'B' , 'A' , 'C' ), ); array_walk($arr1, 'sort'); var_dump($arr1); foreach ($arr2 as &$a) { sort($a); } var_dump($arr2);

preferences:
36.79 ms | 402 KiB | 5 Q