我必须在 while 中求和"变量的值,这里是我的示例:
I have to "sum" variable's values in while, here us my example :
while($row = mysql_fetch_array($result)){
$price= $row['price'] * $row['order_q'];
}
如果我输入echo $price;
,上面的代码会输出例如:
The code above will output if I put echo $price;
for example:
1915201310
我想要类似:sum($price)
或 array_sum($price)
来计算 while 循环的所有结果.所以,我想数:19+15+20+13+10 = 77
I want something like : sum($price)
or array_sum($price)
to count all the results of while loop. So, that i want to count: 19+15+20+13+10 = 77
我如何用 php 做到这一点?
How can I do it with php?
谢谢
只需在循环外初始化一个变量,例如:
Simply initialize a variable outside your loop for example:
$total_price = 0;
并在循环中增加这个数字:
and increment this number inside your loop:
$total_price += $row['price'] * $row['order_q'];
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