Microsoft製 PHPキャッシュエンジン WinCacheが使えるのは IISだけ

The extension is currently supported only on the following configurations:

Windows OS:

• Windows XP SP3 with IIS 5.1 and » FastCGI Extension
• Windows Server 2003 with IIS 6.0 and » FastCGI Extension
• Windows Vista SP1 with IIS 7.0 and FastCGI Module
• Windows Server 2008 with IIS 7.0 and FastCGI Module
• Windows 7 with IIS 7.5 and FastCGI Module
• Windows Server 2008 R2 with IIS 7.5 and FastCGI Module

PHP:

• PHP 5.2.X, Non-thread-safe build
• PHP 5.3 X86, Non-thread-safe VC9 build

via jp2.php.net

そりゃそうか

via ひひーん！