Any guidance to make a script that calculate?

Author Name Status Posted Time Hilda Wasah 3/25/2008 11:40:28 PM Author is Offline Hi friends, I am looking to make a script that does a calculation for me. The user is to enter two variables, height (H) and width (W), click "calculate" and the value will appear, hopefully on the same page. The formula will be (((H*W)+150)*1.65) (pretty easy) However, I would like it to round up to the nearest 10th. So if the value comes out to 411 I would like it to display 420. If the solution is 579 it will round up to 580. Sounds easy but I am not sure where to start. Any guidance will be appreciated. Thanks!!!!

Subject Author Status Date Re: Any guidance to make a script that calculate? Hilda Wasah 3/27/2008 12:23:07 AM This is my scripts so far: Code: ( php ) <?PHP $cost = ((($_REQUEST["height"]*$_REQUEST["width"])+150)*1.65); echo "The cost of the commission will be " .$cost; ?> Code: ( text ) <form action="calculate.php" method="get"> <td align="left"> Height:<input type="text" size="4" name="height"> </select> </td> <td align="left"> Width:<input type="text" size="4" name="width"> </select> </td>       <td colspan="2" align="center"> <input type="submit" value="Calculate"> This works now, but how do I get it to round up to the nearest 10 and how do I get it to display on the same page after I hit "Calculate"? Thanks!!! Post Comments Re: Any guidance to make a script that calculate? Hilda Wasah 3/27/2008 12:23:51 AM i've tried this code too: Code: ( php ) <?   $cost=((($_REQUEST["height"]*$_REQUEST["width"])+150)*1.65);   echo "The cost of the commission will be " .round($cost);   ?> That just rounds it up to a number with no decima ls. Any advice on how to round it up to the neare st 10th? Post Comments Re: Any guidance to make a script that calculate? Zebastti Tottileit 3/27/2008 12:25:33 AM Code: ( php ) <?php function t_round($num) {    return ($num % 10 >= 5 ? ceil($num / 10)*10 : floor($num / 10)*10);    } print t_round(4); ?> There is no specified function for doing this, but i found that ^ after some lurking. Quite simple, actually.. If you don't know what's going on, check out the ceil() and floor() functions. Post Comments Re: Any guidance to make a script that calculate? Zebastti Tottileit 3/27/2008 12:26:26 AM Then that defeats the point of this forum, doesn't it? Post Comments Re: Sorry I interrupted Hesus Oliver Pecce 3/27/2008 12:29:27 AM Sorry I interrupted, but there was a spammer hanging around all forums. That is why I removed hist posts and he was banned for life. Post Comments Re: Yeh, i noticed Zebastti Tottileit 3/27/2008 12:32:17 AM Yeh, i noticed. I was going to PM you but you werent online Post Comments Re: Any guidance to make a script that calculate? Helen Deol 3/27/2008 12:34:19 AM It IS possible to do this the old fashion way. Lets say you start off with 514 and you want to end up with 520 What you do is divide by 10: 51.4 do the round and add one round(51.4) will give you 51 add one will give you 52 then multiply by ten! that will give you a round up to 10. if you want to round to 100, just divide and multiply by 100. The other thing to consider is what if you get 500, do you want 510? The way you can check for this is to divide by 100 and see if you get an integer number. 500/100 = 5 (hint: check for float() or presence of "." (decimal) in it. 514/100 will of course give you 5.14. Hope that helps, good luck. Post Comments Re: Perfect! Thanks everyone!!! Hilda Wasah 3/27/2008 12:35:57 AM Perfect! Thanks everyone!!! Post Comments

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