Posted by Bruce on 02/18/06 18:15

Consider the following code:

$BB = -2181087916;
$AA = (int)$BB;
$AA = intval($BB);

On some systems, $AA will be int(-2147483648), which is actually
consistent with the documentation.

On most systems, however, $AA will be int(2113879380), which is the
same value truncated at 32 bits.

I actually need the latter behavior, as it needs to duplicate Delphi
code, which, like C, behaves the same way.

This is encryption code that does a bunch of calculations on signed
32-bit numbers and ignores any overflows.

Any ideas how I can do this?

--Bruce

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