field('price,cart_num,rose')->find(); if($find && $find['rose']>0){ $product= StoreBranchProduct::where('store_id',$store_id)->where('product_id',$product_id)->find(); $price=bcmul($find['price'], $find['cart_num'], 2); // $rose= bcdiv($find['rose'], 100, 2); // $price=bcsub($price, $price // ) // bcsub($price, $find['rose'], 2); // return $price; } } }