Re: [PHP] Why doesn't working with array's ever stick in my thick head?

[email protected] ("Dan Joseph") Fri, 9 May 2008 13:05:53 -0400
Newsgroups	php.general
Message-ID	<[email protected]>
On Fri, May 9, 2008 at 12:56 PM, Jason Pruim <[email protected]> wrote:

> Hi Everyone,
>
> SO it's friday, I'm tired, and I can't seem to think straight... I am
> attempting to do some very basic math with some arrays... Here's the pseudo
> code that I'm working with:
>
> NumberOfPieces * PieceWeight = TotalWeight
>
> explode total weight to get tenth's of pounds, then divide tenth's of
> pounds by 16 to grab ounces.
>
> Display TotalWeight # Exploded Ounces.
>
> Which I have working just fine for a single set of boxes...
>
> My problem is I want to be able to automatically add say 50 boxes in a form
> to process the weight of each route...
>
> So what I need to do is probably use some kind of a counter to loop through
> my $RoutePieces array and multiply by the $PieceWeight? $PieceWeight is a
> static number.
>
> Now let me show you some abbreviated code to try and explain what I'm using
> right now:
> <?PHP
>        $i= "0";
>        $num= "2";
>        $PieceWeight = $_POST['txtPieceWeight'];
>        $RoutePieces[] = $_POST['txtRoutePieces'];
>        $RouteNumber[] = $_POST['txtRoute'];
>
>        $totalWeight = $PieceWeight * $RoutePieces/16;
>        $weightExplode = explode('.', $totalWeight);
>        //$weightOunces = ((float)('.' . $weightExplode[1])) * 16;
>        // Use stut's method... Seems cleaner
>        $explodeOunces = ($totalWeight - intval($totalWeight)) * 16;
>
>                while($i <= $num){
>        echo <<<HTML
>
>                <p>
>        Route Number:<input type="text" name="txtRoute[$i]" size="4" value
> ="{$RouteNumber[$i]}"> Number of pieces: <input type="text"
> name="txtRoutePieces[$i]" size="4" value="{$RoutePieces[$i]}"><label>Total
> weight of route: {$weightExplode[0]} # {$explodeOunces} Ounces</label>
>        </p>
>
>
> HTML;
>
>        $i++;
>        echo $i;
>                }
> ?>
>
> the $_POST array has the proper values stored properly... I just can't seem
> to figure out how to work with the values... Any ideas? Or slaps on the back
> of the head to wake me up a little? :)
>
> I need help :P
>
>
>
> --
>
> Jason Pruim
> Raoset Inc.
> Technology Manager
> MQC Specialist
> 3251 132nd ave
> Holland, MI, 49424-9337
> www.raoset.com
> [email protected]
>
>
>
>
Rather than a counter, you could use foreach:

foreach ( $RoutePieces as $key => $value )
{
     $blah = $value * $PieceWeight;
}

Make sense?

-- 
-Dan Joseph

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