3v4l.org

run code in 500+ PHP versions simultaneously
<?php $something = [3, 2, 1, '2', 3, 6, 5, 1, 1]; $liste = []; foreach ($something as $value) { $liste[$value] = $value; } var_export($liste);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
array ( 3 => 3, 2 => '2', 1 => 1, 6 => 6, 5 => 5, )

preferences:
84.79 ms | 1268 KiB | 4 Q