php sum variable in while loop

php, sum, variables, while-loop

Solution

Simply initialize a variable outside your loop for example:

$total_price = 0;

and increment this number inside your loop:

$total_price += $row['price'] * $row['order_q'];

Problem

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']; } ``` The code above will output if I put `echo $price;` for example: 19 15 20 13 10 I want something like : `sum($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` How can I do it with php? Thanks

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