3v4l.org

run code in 500+ PHP versions simultaneously
<?php $masterArray = [ [ ['gross_value' => '100', 'quantity' => '5'], ['gross_value' => '200', 'quantity' => '6'] ], [ ['item_title_id' => '1', 'order_id' => '3'], ['item_title_id' => '2', 'order_id' => '4'] ], [ ['foo' => 'bar1'], ['foo' => 'bar2'] ] ]; var_export( array_map('array_merge', ...$masterArray) );
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 - 8.4.22, 8.5.0 - 8.5.7
array ( 0 => array ( 'gross_value' => '100', 'quantity' => '5', 'item_title_id' => '1', 'order_id' => '3', 'foo' => 'bar1', ), 1 => array ( 'gross_value' => '200', 'quantity' => '6', 'item_title_id' => '2', 'order_id' => '4', 'foo' => 'bar2', ), )
preferences:
82.64 ms | 1318 KiB | 4 Q