Int to float precision loss in 64bit environment

Hey list: I noticed an issue today running our ZF unit tests, it primarily came down to this issue: On 32 bit environments .. ~# php -r "var_dump(PHP_INT_MAX+1 > PHP_INT_MAX);" .. will return true, whereas in 64bit environments, this returns false. In talking with Stas, it seems that since PHP_INT_MAX+1 is pushed into a (float) and since float values are stuffed into 52bit mantissa / 11 bits for exponents, we are loosing some precision. That lost precisions is causing the above to fail in one platform, and work in another. Is this noted somewhere? Is there a workaround? Or, is this something that can be fixed for 64 bit platforms (somehow)? This is not a big issue for us since (it seems) it's strictly a value that is being created for unit testing and I am not sure if it's something people use in code, or even see in the wild in general. I can get around it by ensuring the actual value is large enough to change the minimal precision value using PHP_INT_MAX+1025. It't not until you've pushed past a 1024 buffer/(integer loss in precision?) until things start working again as expected: ~# php -r "var_dump(PHP_INT_MAX+1 > PHP_INT_MAX);" bool(false) ~# php -r "var_dump(PHP_INT_MAX+1024 > PHP_INT_MAX);" bool(false) ~# php -r "var_dump(PHP_INT_MAX+1025 > PHP_INT_MAX);" bool(true) Any information would be great. Thanks, Ralph Schindler