3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ['user_id' => 82, 'ac_type' => 1], ['user_id' => 80, 'ac_type' => 5], ['user_id' => 76, 'ac_type' => 1], ['user_id' => 82, 'ac_type' => 2], ['user_id' => 80, 'ac_type' => 6] ]; $result = []; foreach (array_reverse($array) as $row) { $result[$row['user_id']] = $row; } var_export(array_values($result));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array ( 0 => array ( 'user_id' => 80, 'ac_type' => 5, ), 1 => array ( 'user_id' => 82, 'ac_type' => 1, ), 2 => array ( 'user_id' => 76, 'ac_type' => 1, ), )

preferences:
135.71 ms | 402 KiB | 117 Q