Inside Colin's Head

I needed to install YUI's PHP loader on my server recently so that I could deliver combo'd CSS/JS files over SSL. Somehow the Google and YAHOO CDNs don't support all the features I needed (SSL, YUI 3 / YUI 2 support, combo'd delivery). This process was a pain in my ass, so I hope I can make it easier for the next person!

There are lots of tutorials on how to do this, but for some reason I had a problem with just about every one of them. Please don't take my word as gospel, but maybe this info will help you:

PHP Install Steps

1. Download PHP 5.
   Even this part was confusing. I've packaged up my PHP installation (download) including my adjustments to get everything working.
2. Extract the contents of the PHP zip file to C:\PHP
3. Add C:\PHP to your system PATH.
   Open the System dialog (from Control Panel), click the "Advanced" tab and click "Environment Variables." Edit your PATH variable to include C:\PHP (you will probably need to append ";" to the end of the existing path before adding C:\PHP).
4. In the C:\PHP folder, rename php.ini-recommended to php.ini (not needed if you downloaded my installation from step 1)
5. For Windows 64-bit only:
   You must run IIS in 32-bit mode for PHP to work. Open a command prompt and run this command to enable IIS in 32-bit mode:
   cscript %SYSTEMDRIVE%\inetpub\adminscripts\adsutil.vbs SET W3SVC/AppPools/Enable32bitAppOnWin64 1

   Now navigate to C:\WINDOWS\Microsoft.NET\Framework\v2.xxx. Run "aspnet_regiis.exe -i" (it's imperative that you are in the "Framework" folder and not the "Framework64" folder).

   Open IIS, expand Web Service Extensions, and make sure that ASP.NET 32-bit is set to "Allowed."

6. Open IIS, expand Web Service Extensions, and click the link to add a new extension. Name it something like "PHP ISAPI Extension" and select the C:\PHP\php5isapi.dll file. Make sure the extension is set to "Allowed."

7. Open IIS, right-click "Web Sites", and then "Properties." Under the "Home Directory" tab click "Configuration." Add a new extension mapping, setting ".php" as the extension and C:\PHP\php5isapi.dll as the executable path. You can limit verbs to "GET,POST,HEAD" if you like.

8. Install the PHP registry settings. I've packaged them up for conveinence (just extract and then double-click the .reg file).
9. I had to copy my php.ini file to the C:\WINDOWS directory and run "iisreset" to get everything working.

10. Create a file in one your sites named "phpinfo.php" and include the text below. After doing so, navigate to that page in a browser and you should be able to see a dumping of PHP information.
    

    <?phpphpinfo();?>

YUI PHP Loader Install Steps

I also had a few problems with the out-of-the-box PHP Loader for YUI (download my finished YUI folder):

1. In combo.php, I had to change getenv("QUERY_STRING") to $_SERVER("QUERY_STRING").
2. In combo.php you'll need to change PATH_TO_LIB to your server's web url.
3. In all of the files in /lib/meta, you'll need to change the urls to match your server.

4. I had to adjust my PHP install to ensure that the cURL was working. If you didn't download my PHP installation above, you need to ensure that php_curl.dll is in your C:\PHP\ext folder. Then edit your php.ini file: set the extension_dir value to C:\PHP\ext\ and uncomment the line extension=php_curl.dll

After all of that mess, the combo loader worked perfectly for me!

You can test your installation by visting your server's url at /phploader/test/test-loader.php. Use the checkboxes to select a few items and then visit the CSS/JS urls that it creates to see if the YUI loader works for you.

UPDATE: Looks like the PHP Loader isn't quite working correctly for me. Lots of extra data is being pulled; when I compare a sample request on YAHOO!'s loader to mine, there is a huge discrepency in the number of KBs written. After spending over a day on this I had to move on to a different solution.