3v4l.org

run code in 500+ PHP versions simultaneously
<?php $arr1 = [ 'a' => ['gross_value' => '100', 'quantity' => '1'], 'b' => ['gross_value' => '200', 'quantity' => '1'] ]; $arr2 = [ 'b' => ['item_title_id' => '1', 'order_id' => '4'], 'a' => ['item_title_id' => '2', 'order_id' => '4'] ]; var_export( array_map('array_merge', $arr1, $arr2) );
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 ( 'gross_value' => '100', 'quantity' => '1', 'item_title_id' => '1', 'order_id' => '4', ), 1 => array ( 'gross_value' => '200', 'quantity' => '1', 'item_title_id' => '2', 'order_id' => '4', ), )
preferences:
62.78 ms | 1295 KiB | 3 Q