php數組分組問題

php二維數組按某個字段分組：php <?php $order_item = Array ( => Array ( 'order_id' => 1111 ,'item_id' => 1, 'pro_id' => 1, 'pro_name' => 1111 ,'buy_num' => 5), => Array ( 'order_id' => 1111 ,'item_id' => 2 ,'p

>>阅读原文<<