[thelist] [PHP] PHP5 and the use of += ?

[Lawrence Oluyede]

On Tue, Aug 19, 2008 at 11:40 AM, Tris <beertastic at gmail.com> wrote:
> Hi all...
> I'm currently moving a shopping basket from a PHP 4 server to a PHP 5
> serrver and it's 90% ok.
> However,
> The shopping basket system, currently loops through the items in the
> users basket and keeps a tally of the total cost using this:
>
> $finalPrice += $itemPrice;
>
> In each loop of the basket checker..
>
> However, in the new server, it seems to be adding up more than it needs to.
> As if it's doing for each loop:
>
> $finalPrice = $finalPrice + $finalPrice + $itemPrice;
> So the more goes into the basket, the more out ther final price is..

This sounds wrong to me. The first is like:

a = a + b

The second is like

a = (2 * a) + b

So definitely is overcharging :)

-- 
Lawrence, stacktrace.it - oluyede.org - neropercaso.it
"It is difficult to get a man to understand
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