How to install PHP ISAPI on Windows 2008 IIS7 x64
Posted By Chris Stinson in General, Internet Information Server, PHP, Windows on July 3, 2008
With the release of Windows Server 2008 and IIS 7, Microsoft has included PHP5 FASTCGI support. ISAPI is still faster in my opinion, and if used correctly, very stable. PHP uses a 32-bit DLL so it will not work with an x64 system. There are several ports of PHP to x64, but all have proved to be unstable. Below I will outline the steps to install PHP 32-bit on Windows 2008 x64 (and have it stable).
- Install the PHP4 or PHP5 package (32-bit) in C:\PHP or wherever you like. Only use the Windows installer from php.net if you do not need any extensions. I would recommend downloading the PHP zip package.
- Open the Internet Information Services (IIS) Manager.
- Double-click “Handler Mappings” from the main IIS screen.
- Click on “Add Script Map.”
- Set up the handler mapping for c:\PHP\php5isapi.dll with extension *.php and check to allow the ISAPI extension and execution of scripts.
- Double-click “ISAPI & CGI Restrictions” on the main IIS screen. Right-click on PHP and select “Edit Feature Settings” and check “Allow unspecified ISAPI modules.”
- Right-click on the Default Application Pool (or the one you want to use if more than one) and select “Advanced Settings.”
- Change the “Enable 32-bit Applications” to True. Click OK. This spawns the App Pool in 32-bit mode, so if you have other modules that need to be run in 64-bit mode, best to separate the website into two App Pools: one 32-bit and one 64-bit.
- Restart the server.
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Good tip. Thanks for sharing. Enabling 32bit in advanced settings is what did it for me.
Thats alot for the guide, worked out great
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I am having issues installing PHP. The header here is to install on a 64 bit machine, but the msi install fails because it is a 32 bit app. I get an error message that this installer is not for your system. I’m trying to install manually, but it’s difficult. For just the php.ini file edit says it uses the registry key values that don’t exist as there is no install done. Anyway, I am trying to get 32 bit PHP installed on a 64 bit server. If anybody can point me in the right direction – any help would be most appreciated.
This worked great, I have even tested on IIS 7.5 in Windows 2008 R2 – RC1. Thanks.
I can’t seem to get it to recognize the mhash and pgsql extensions when running as isapi. If i run as php-cgi it works.. Anyone else see this?
THANKS!!!
I was stuck and your article gave me the tip I was looking for (enable the 32 bit support in IIS pools)
Thanks for having done this great article, it saved me a lot of time!
Good to the point article.
Matt wrote: “I can’t seem to get it to recognize the mhash and pgsql extensions when running as isap”.
I got Win Web Server 2008 R2 x64 & IIS 7.5.
Running PHP as isapi.
Tried to load all extensions listed in the php.ini file.
Some loaded, others didn’t.
I only need php_mysql.dll which sadly didn’t load.
Can’t say I have a clue as to why. all dll’s are in the folder extension_dir points to.
Last missing piece for me to get php_mysql extension to work on ISS 7.5 on Windows Web Server 2008 R2 x64:
copy C:\php\libmysql.dll to C:\Windows\SysWOW64
So steps to get php_mysql extension loaded:
1. in php.ini, make sure extension_dir points to where php_mysql.dll is.
2. in php.ini, enable extension=php_mysql.dll
3. copy C:\php\libmysql.dll to C:\Windows\SysWOW64
That does it for me.
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