php - In Smarty products with the same ID adding together -

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do have chance in smarty list items same id (product id) count (add)?

{$order_value} {$qty_value} {$id_value} {$title_value}

instead of this:

order: 004, quantity: 3, product id: 001, title: fish order: 005, quantity: 1, product id: 001, title: fish

something this:

quantity: 4, product id: 001, title: fish


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