3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array (1 => array(1, 2, 3), 2 => array(1, 2), 3 => array(1, 3, 4), 4 => array(1, 2), 5 => array(1, 3, 4) ); $array = array_unique ($array, SORT_REGULAR); print_r ($array);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Array ( [1] => Array ( [0] => 1 [1] => 2 [2] => 3 ) [2] => Array ( [0] => 1 [1] => 2 ) [3] => Array ( [0] => 1 [1] => 3 [2] => 4 ) )
preferences:
145.74 ms | 408 KiB | 5 Q