Online PHP editor | output for GD3KZ

<?php $csv_array = array ( 0 => array ( 0 => 'delivery_postcode', 1 => 'tracking' ), 1 => array ( 0 => 'A0N2H0', 1 => 3197653232325 ), 2 => array ( 0 => 'A3N 3A6', 1 => 31976532323252 ) ); $orders = array( array ( 'orders_id' => 32061, 'delivery_postcode' => 'V0R 2M0' ), array ( 'orders_id' => 32011, 'delivery_postcode' => 'L8B1H5' ), array ( 'orders_id' => 31846, 'delivery_postcode' => 'K0E1K0' ), array ( 'orders_id' => 31822, 'delivery_postcode' => 'A0N 2H0' ), array ( 'orders_id' => 31503, 'delivery_postcode' => 'V0J 1Z2' ) ); $csv_keys = array_shift($csv_array); $csv_array = array_map(function ($a) use ($csv_keys) { return array_combine($csv_keys, array(str_replace(' ', '', $a[0]), $a[1])); }, $csv_array); $tracked = array(); foreach ($orders as $order) { if (($key = array_search(str_replace(' ', '', $order['delivery_postcode']), array_column($csv_array, 'delivery_postcode'))) !== false) { $tracked[] = array_merge($order, $csv_array[$key]); } } print_r($tracked);