Knowledge base for Windows Webmasters, Administrators and Web hosting compagnies, with a special attention to WAMP (Windows Apache MySQL PHP). Most articles/tips are currently in use on web hosting servers. This is an open site, please participate or even join us.
New:
eAccelerator 0961 for PHP 5.3.3
eAccelerator 0961 for PHP 5.2.14
eAccelerator 0.9.5.1 for PHP 4.4.9

eAccelerator binaries for PHP 5.x (windows builds)

For the Windows eAccelerator for php 5.3+ visit our new page at:eAccelerator binaries for PHP 5.3+.

Updated: eAccelerator download using latest code (0.9.5.3 with PHP 5.2.9).

Please find following the compiled binaries of eAccelerator for Windows using Microsoft VC++ 6. For PHP 4 versions: eAccelerator binaries for PHP 4.x.
If you need a version not offered here, let us know (post comment).

eAccelerator

We have been using this PHP accelerator (0.9.X), on multiple servers, for a long time. It's used on some high traffic sites without any problem.

Install:
a) Download a copy of eAccelerator that is compatible with your version of PHP.
This can be an issue with eAccelerator. Sometimes it can take a little time before the Windows binaries are available for the most recent version of PHP.

APC binaries for PHP 4.x (windows builds)

Updated: APC download using latest code (3.0.11).

Please find following the compiled binaries of APC for Windows using Microsoft VC++ 6. For PHP 5 versions (following link should be updated soon): PHP APC binaries for PHP 5.x.
If you need a version not offered here, let us know (post comment).

Alternative PHP Cache ( APC )

This accelerator does not perform well at all under Apache 2.2.0. Just running one of my site used nearly all the memory (30M max).
The segment feature doesn't really work on Windows, so you're limited to 30M.
Update02/2006: Under Apache 2.0.55 and 2.2.2 it seems to perform normally.

eAccelerator seems faster then APC. But if you are running multiple instances of Apache on the same server you will appreciate a second caching tool for PHP. I use both APC and eAccelerator with production sites. APC seems to be getting better just in the last 3 months (since 01/2006).

Note: This accelerator might get better, in the near future, since some of the PHP developers appear to also be involved with APC.

Windows binaries download:
http://pecl4win.php.net/ext.php/php_apc.dll
Sitebuddy APC Windows Binaries for PHP 5.
Sitebuddy APC Windows Binaries for PHP 4.

eAccelerator binaries for PHP 5.3+ (windows builds) Part 2

For the Windows eAccelerator for php 5.x (pre PHP 5.3) visit :eAccelerator binaries for PHP 5.x (pre 5.3).

eAccelerator download using latest code (0.9.6.1 with PHP 5.3.3).

Apache Better Log Rotation mod_log_rotate

Important: The Apache provided tool rotatelogs.exe is to buggy to use "for real", see: Apache Rotatelogs.exe for Windows Server

FrontPage Guestbook, Board, Forms spam

The main raison for people spamming your FrontPage Guestbook, Forum/Board or forms is that the search engine Google, counts every "back link" (i.e. link pointing to these SPAM sites) as a positive vote. So if they can get a link to their site on your Guestbook, Google will interpret this as an "endorsement" of their site and give then additional "importance".

This spamming activity is especially common nowadays since they are thousands of automated scripts looking for FrontPage (or not, they will try to spam anything really...) guestbooks, boards, or forms to post SPAM links.