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Posted by David Haynes on 05/31/06 10:36
Skeleton wrote:
> Yes, I have read the manual and notes below the manual. But actually, I
> don't need exactly the decbin function. I have used that just to show
> something going wrong. My point is the ^ operator. For ex, look at the
> following code and its outputs:
>
> echo (1 ^ -5817441119);
> // Prints -1522473824 which is true result, at PHP 5.1.2 + Windows
> // Prints -2147483647 which is false result, at PHP 4.4.2 + Linux
>
> I also thought that the reason is that the number is too small, but why
> PHP 5 calculates correctly? Is there a big difference in number types
> between PHP 4 and PHP 5? I don't know if it helps but when I checked
> PHP_INT_MAX, it is 2147483647 for both.
Be careful of your base assumptions. php 5.1.2 on Linux produces
-2147483647 as well.
-david-
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