simple question about variables

[Anon]

i have php session script with a variable '$price'

everytime the script executes a different value is stored in this variable eg. '25.00' then '35.00' then '100.00' and so on..

what i want to do is take the value stored in $price and then when a new value is assigned to $price
i want to add the old value to the new one to make $totalprice and so on over and over...so everytime
the script executes new values get assigned to $price but $totalprice adds up each value.

i just cant get my brain round this but i am sure the solution is simple..

Cheerz
Hargs

[Anon]

can't you just continually sum togther $price and $totalprice to update $totalprice?

$totalprice = 0;

1st exec:
$price = 25.00;
$totalprice += $price;
// $totalprice = 25.00

2nd exec:
$price = 10.00;
$totalprice += $price;
// $totalprice = 35.00

3rd exec:
$price = 15.00;
$totalprice += $price
// $totalprice = 50.00

[Anon]

Thanks Devin,

i know that there was a method...i just couldnt get the logic staright in my head..

thanks
Hargs