davlee

Size = 4, Max = 2147483647

I'm having problems running a php program on my Linux box which runs fine on my Windows box. I traced the problem down to a line of code: $higherValue = 0xFFFFFFFF; This should be an maximum unsigned int value of 4294967295, but PHP doesn't handle unsigned int so it should convert it to a float. This is not happening on my system. Instead it is just converting it to a max int value of 2147483647. I wrote a small php test script: var_dump(0x00000000); var_dump(0xFFFFFFFF); var_dump(0xFFFFFFFE); On Windows: int(0) float(4294967295) float(4294967294) On Linux: int(0) int(2147483647) int(2147483647) Versions: Windows: >.\win32\php -c php-win.ini -v PHP 5.3.15 (cli) (built: Jul 20 2012 00:20:38) Copyright © 1997-2012 The PHP Group Zend Engine v2.3.0, Copyright © 1998-2012 Zend Technologies Linux: > php -v PHP 5.3.27 (cli) (built: Jun 24 2014 01:48:44) Copyright © 1997-2013 The PHP Group Zend Engine v2.3.0, Copyright © 1998-2013 Zend Technologies How do I get integer overflow working? Do I have a bad build of PHP?