Windows – 32bit or 64bit PHP on 64bit capable processor/64-bit Windows Server 2008/IIS7

I recently installed Apache on Windows Server 2008.

I just downloaded the latest stable release for both software packages. Note that for PHP, you need to keep this in mind (from http://windows.php.net/download/):

If you are using PHP with Apache 1 or Apache2 from apache.org you need to use the VC6 versions of PHP.

Now the installer will list Apache 2.x as a configuration option.

If you are able to install, but not configure PHP, please comment on my answer, and I will provide you with some directives on how to set up PHP for apache with 2 lines in the configuration file.

I believe you have to reinstall. But, if you are running Network Deployment (DMGR), you can keep the DM and the Node agent 32 bit.

Assuming you are doing this on the same machine, just install 64 bit WAS in a different directory. During the install, select a custom profile so you just create a new Node / Server and federate it to the existing deployment manager. Once that's complete, you can map the existing applications in your old server to the new 64 bit server.