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# Multiples of Integers

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Well, considering I'm not very math savvy, I need a bit of help. I'm trying to determine whether one integer is evenly divisible into another integer, IE is 1033343 a multiple of 3, is 105 a multiple of 5, etc. How would one go about determining this in a memory-conservative manner?

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[!--quoteo(post=364686:date=Apr 14 2006, 02:29 PM:name=Jarin)--][div class=\'quotetop\']QUOTE(Jarin @ Apr 14 2006, 02:29 PM) [snapback]364686[/snapback][/div][div class=\'quotemain\'][!--quotec--]
Well, considering I'm not very math savvy, I need a bit of help. I'm trying to determine whether one integer is evenly divisible into another integer, IE is 1033343 a multiple of 3, is 105 a multiple of 5, etc. How would one go about determining this in a memory-conservative manner?

[/quote]
use the '%' operator which gives you the remainder of a division. e.g \$i = 5 % 5; #\$i=0;

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You could probably just use the Modulus operator. This basically divides 2 numbers and tells you what the remainder is. So you could test and see if it's equal to 0, and if so, then you know that one number is a multiple of another. Here's an example using the numbers from your example:

[code]
\$a = 1033343;
\$b = 3;
\$result = \$a % \$b;
if (\$result == 0)
echo 'the two numbers are evenly divisible';
else
echo 'the two numbers are not evenly divisible';
[/code]

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Never knew that operator existed. Thanks a lot guys, much appreciated!