Intval issues with different maximum range on win7x64 and CentOS

Intval problems with different maximum range on win7x64 and CentOS
has been developed using win7x64, a Web server with a php5.5 built-in Web server,
Yesterday suddenly found a problem, the same code, on Win7 and CentOS, the results are different:
Var_dump (intval (' 21474836470 '));
Output on Win7: int 2147483647
In CentOS output: int 30000000000

The manual says:
The maximum value depends on the operating system. 32-bit system maximum signed integer range is 2147483648 to 2147483647
On a 64-bit system, the maximum signed integer value is 9223372036854775807.

But my system is win7x64 ah, download PHP also verified the next, is the 64-bit version,
Why does it appear that Intval is a 32-bit effect???
Looking at phpinfo under Windows, you can also see that it is 64-bit:
PHP Version 5.5.14
System Windows NT 7d494368868afa1 6.1 build 7601 (Windows 7 Ultimate Edition Service Pack 1) AMD64
Build Date June 25 2014 12:37:32
Compiler MSVC11 (Visual C + + 2012)
Architecture x64
------to solve the idea----------------------
This not only depends on the operating system version, but also the version of PHP, the official release of PHP version is 32-bit
------to solve the idea----------------------
Whether you need to develop with a 64-bit version depends on the operating environment.
Otherwise, your project will be aborted due to the 64-bit server not being found.
In addition, 64-bit systems are true and false: 64-bit system 64-bit architecture and 64-bit system 32-bit architecture (32-bit and quasi-32-bit in 32-bit systems)

Then there is, or the problem with you may be a bug (can be found on the bug site) is now 5.6.9, may have been repaired?

