Mod operator Overflow suspected

[pmtolk]

B"H

 

I am using the math mod operator %

when I enter the following code

$result=1234567891 % 100000000

I get the correct result

34567891

but if I do it by 1 more digit

$result=12345678912 % 100000000

-39222976

which doesn't make any sense

 

12,345,678,912

12 billion should fit into a c type long which is was what I thought the default size of an integer is in php

What am I missing?

Thanks so much

Philip

 

 

[btherl]

The underlying type of an integer in php is an int.  That is 32 bits on a 32 bit OS, and 64 bits on a 64 bit OS (with a 64 bit version of php).

 

There's a table of limits here: http://en.wikipedia.org/wiki/Limits.h