3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ [ 'price' => [ 'cost' => 200, 'tax' => 10, 'total' => 210 ], 'otherKey' => 'etc' ], [ 'price' => [ 'cost' => 500, 'tax' => 50, 'total' => 550 ], 'otherKey' => 'etc' ], [ 'price' => [ 'cost' => 600, 'tax' => 60, 'total' => 660 ], 'otherKey' => 'etc' ], ]; $result = []; foreach ($array as ['price' => ['total' => $result[]]]); var_export($result);
Output for 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 => 210, 1 => 550, 2 => 660, )

preferences:
64.67 ms | 1111 KiB | 4 Q