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Math Problem

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Join Date: Aug 2008

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MVied

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Math Problem

Oct 4th, 2008

Okay, so I'm writing an application. In this application there is a drop down with the selections 10, 20, 30, and so on to 100. This drop down controls the amount of times a loop will occur. Basically, every time the application gets to a loop that is 10% of the total amount of loops, I want it to echo out a small line. On the user end this outputs a small block in a progress bar.

For example if you choose 10, then every loops it would output a block on the progress bar to give us 100%.

If you choose 20, every 2 loops it would output a block on the progress bar to give us 100%.

The easy way out would be to make a huge case select of if, elseif statement, but that's not what I want to do.

As an example, if you choose 10 ($amount = 10), it works correctly. $i is the increment of the loop.

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
echo ($i % ($amount / 10) == 0) ? "<div class=\"load\"></div>" : "";
echo ($i % ($amount / 10) == 0) ? "<div class=\"load\"></div>" : "";

I know that's very confusing, but hopefully someone can understand and give me some mathematical help.

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cwarn23

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Re: Math Problem

Oct 4th, 2008

I have had to do similar things in the past and I find division and rounding to be the answer. An example is as below:

 Help with Code Tags 
 php Syntax (Toggle Plain Text) 
$loop=0;
while ($loop<=100)
	{
	$val=$loop/10;
	if ($val==round($val))
		{
		echo ($i % ($amount / 10) == 0) ? "<div class=\"load\"></div>" : "";
		}
	$loop+=1;
	}
$loop=0;
while ($loop<=100)
	{
	$val=$loop/10;
	if ($val==round($val))
		{
		echo ($i % ($amount / 10) == 0) ? "<div class=\"load\"></div>" : "";
		}
	$loop+=1;
	}

Hope that helps to answer your question.

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Join Date: Aug 2008

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MVied

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Re: Math Problem

Oct 4th, 2008

Well, your solution didn't work for me, but it got me thinking and now my code works.

Soon I'm going to post it in the Web Developer's Lounge. It'll be something everyone wants.

"We've heard that a million monkeys at a million keyboards could produce the complete works of Shakespeare; now, thanks to the Internet, we know that is not true." - Robert Wilensky

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R0bb0b

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Re: Math Problem

Oct 4th, 2008

I don't know if round would be necessary since 10, 20, 30..., 100 are all % 10 evenly.

And I don't see why this code:

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Originally Posted by MVied

Help with Code Tags

php Syntax (Toggle Plain Text)
echo ($i % ($amount / 10) == 0) ? "<div class=\"load\"></div>" : "";
echo ($i % ($amount / 10) == 0) ? "<div class=\"load\"></div>" : "";

wouldn't work.

Can you post the rest of your code?

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Join Date: Jun 2008

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R0bb0b

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Re: Math Problem

Oct 4th, 2008

Oh, you got it, OK.

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MVied

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Re: Math Problem

Oct 4th, 2008

Basically the problem was $i starting off as 0. This threw it off completely. I used $n to start as 1 and count (because I use the $i for more than just an increment).

I'll be posting this project soon. I know you'll like it R0b

Last edited by MVied; Oct 4th, 2008 at 11:13 pm.

"We've heard that a million monkeys at a million keyboards could produce the complete works of Shakespeare; now, thanks to the Internet, we know that is not true." - Robert Wilensky