3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ['item1' => 80], ['item2' => 25], ['item3' => 85], ]; usort($array, fn($a, $b) => current($a) <=> current($b)); var_export($array);
Output for 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 ( 'item2' => 25, ), 1 => array ( 'item1' => 80, ), 2 => array ( 'item3' => 85, ), )
preferences:
92.41 ms | 407 KiB | 5 Q