Online PHP editor | refs for 9LGHH

<?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) );