I have a laptop running Windows7 and if I right-click on "Computer" on the desktop and select properties I can see that "System type" is "64-bit Operating system" If I run PHP_INT_MAX as a watch in PHPStorm it gives me 2147483647, why? Does this indicate that PHPStorm is running as 32 bit or is PHP running in 32 bit mode? If I do php --version I can see that I am running PHP 5.4.7
My actual problem is that I am trying to do $result = $var << 5 and $var was 318 497 757 before I got to this line of code. The $result after this line is 1601993632 but should be 10191928224 (if my math is correct)
What is going wrong and where? I have no idea what is wrong or where? Thanks.
By default, all public PHP builds from windows.php.net website are 32 bit. From your description it sounds like you do have 32-bit one.
If you want 64-bit PHP then you need to find (or compile it yourself) and use 64-bit PHP build.
How to check what xx-bit PHP you are using
Check output of phpinfo() function (or just php -i from command line). Look for Architecture row on the top. 64-bit will have x64 while 32-bit will have x86.