3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = [ 'one' => 1, 'two' => 2, 'three' => 3, 'four' => 4, 'five' => 5, 'six' => 6 ]; $b = [ 'one' => 'uno', 'three' => 'tres', 'two' => 'dos', 'four' => 'cuatro', 'five' => 'cinco' ]; $result = []; foreach ($a as $k => $v) { $result[] = [$v, $b[$k] ?? null]; } var_export($result);
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 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 0 => array ( 0 => 1, 1 => 'uno', ), 1 => array ( 0 => 2, 1 => 'dos', ), 2 => array ( 0 => 3, 1 => 'tres', ), 3 => array ( 0 => 4, 1 => 'cuatro', ), 4 => array ( 0 => 5, 1 => 'cinco', ), 5 => array ( 0 => 6, 1 => NULL, ), )
preferences:
81.71 ms | 1303 KiB | 4 Q