Re: [PHP] Why doesn't working with array's ever stick in my thick head?
[email protected] (Jason Pruim)
| Newsgroups | php.general |
|---|---|
| Message-ID | <[email protected]> |
On May 9, 2008, at 1:05 PM, Dan Joseph wrote: > 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 * $PieceWeight; > } > > Make sense? The idea make sense, and I think it will work. But I'm getting this error: [Fri May 9 13:19:33 2008] [error] PHP Fatal error: Unsupported operand types in /Volumes/RAIDer/webserver/Documents/dev/weightcalc/ index.php on line 22 foreach ($RoutePieces as $key => $value){ $testWeight = $value * $PieceWeight; <-------Line 22 } Some quick trying tells me that the problem is my "*" I don't remember having this problem before. Is there another character I should use to multiply with? :) Thanks for looking! -- Jason Pruim Raoset Inc. Technology Manager MQC Specialist 3251 132nd ave Holland, MI, 49424-9337 www.raoset.com [email protected]