3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr[] = array(0,1,2,3); $arr[] = array(4,5,2,1); $arr[] = array(0,0,0,0); $arr[] = array(0,1,2,3); var_export(array_unique($arr, SORT_REGULAR));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
array ( 0 => array ( 0 => 0, 1 => 1, 2 => 2, 3 => 3, ), 1 => array ( 0 => 4, 1 => 5, 2 => 2, 3 => 1, ), 2 => array ( 0 => 0, 1 => 0, 2 => 0, 3 => 0, ), )
preferences:
112.06 ms | 407 KiB | 5 Q