This document discusses changes to Microsoft's IIS web server architecture including: 1. IIS request processing is now split into ~40 plug-in modules that extend server functionality through a public API. 2. IIS 6.0 had limitations processing ASP.NET requests and duplicated features, which has been addressed in the new architecture. 3. The document outlines how PHP can be configured to run on IIS using FastCGI and per-site configurations.

1. Nick Hodge Microsoft Australia Professional Geek [email_address] Jorke Odolphi Microsoft Australia Web Infrastructure Evangelist [email_address]

2. This is not your father’s Microsoft

4. IIS Request Processing Server functionality is split into ~ 40 modules... Modules plug into a generic request pipeline… Modules extend server functionality through a public module API. Authorization ResolveCache UpdateCache … … … Monolithic implementation Install all or nothing … Extend server functionality only through ISAPI … Send Response Log Compress NTLM Basic Determine Handler CGI Static File ISAPI Authentication Anon SendResponse Authentication ExecuteHandler ASP.NET PHP

5. IIS 6.0 ASP.NET Processing Runtime limitations Only sees ASP.NET requests Feature duplication … … … … aspnet_isapi.dll Send Response Log Compress NTLM Basic Determine Handler CGI Static File ISAPI Authentication Anon Authentication Forms Windows Map Handler ASPX Trace …

8. PHP Setup

9. Per-site PHP configuration Configuring FastCGI process pool < fastCgi > < application fullPath =&quot;C:HPhp-cgi.exe&quot; arguments =&quot;-d my.website=website1&quot;> < environmentVariables > < environmentVariable name =&quot;PHPRC&quot; value =&quot;C:ebSitesebsite1&quot; /> </ environmentVariables > </ application > </ fastCgi > Combination of fullPath and arguments uniquely identify FastCGI process pool definition PHPRC environment variable contains path to the php.ini file