动态计算php mysql结果总和

时间:2015-06-29 20:01:34

标签: php html mysql css database

我有一张产品价格模型成本库存表,以便我更轻松地计算每个产品的总客户支付

<?php echo number_format($show['quantity'] * $show['product_price'],0,',','.'); ?>

我需要显示此计算的总和,但正如您所见,它们是在PHP中实时计算的。有办法吗?

这是完整的代码

<?php
$result=mysqli_query($database,"SELECT * FROM `products` order by `category` ASC");
$rows=mysqli_num_rows($result);
if(mysqli_num_rows($result)>0){
?>

<table class="sales">

<tr>
<td>Quantity</td>
<td>Product Cost</td>
<td>Customer Pays</td>
</tr>        

<?php if($rows){$i=0;while($show=mysqli_fetch_assoc($result)){?>

<tr>
<td><?php echo number_format($show['quantity'],0,',','.'); ?></td>
<td><?php echo number_format($show['product_cost'],0,',','.'); ?></td>
<td><?php echo number_format($show['quantity'] * $show['product_cost'],0,',','.'); ?></td>
</tr>

<?php }}?>
</table>

TOTAL CUSTOMER PAY FOR ALL PRODUCTS = EXAMPLE $10.234

如果结果中有5种不同的产品具有不同的价格和不同的客户支付,我需要总结所有这些客户支付并在此处显示

<?php }else{?> 

No products to show

<?php }?>

编辑:已解决

解决方案是

<?php
$count = mysqli_query($database, "SELECT SUM(stock * cost) AS totalPaid
FROM products");
while($total = mysqli_fetch_assoc($count)){
     echo number_format($total['totalPaid'],0,',','.');} ?>

感谢McAdam331的正确答案

1 个答案:

答案 0 :(得分:0)

您可以将SUM添加为SQL查询的一部分:

SELECT SUM(quantity * product_cost) AS totalPaid
FROM myTable
GROUP BY customer;

我只是猜测你根据问题中的线索对客户进行分组,但你可以根据需要改变它。