我有一个数组如下。Array([0]=>Array([item]=>BananaCreamCheesecake[item_id]=>3[product]=>Desserts)[1]=>Array([item]=>BananaCreamCheesecake[item_id]=>3[product]=>Desserts)[2]=>Array([item]=>BananaCreamCheesecake[item_id]=>3[product]=>Desserts)[3]=>Array([item]=>BananaCreamCheesecake[item_id]=>3[product]=>De