The latest stats for July: 6,954,476 domains and 983,273 IP addresses are now running PHP (source: Netcraft). Zend (http://www.zend.com) is offering support and serious add-on products to help PHP continue to penetrate the enterprise. Their recently added sections include a "Why PHP" area (http://www.zend.com/why-php.php) which is well worth
reading.
As an aside, BadBlue recently entered the ranks of Netcraft's web
server survey (try to say that five times quickly)... you can see for
yourself at http://www.netcraft.com/Survey/servers.html .
BadBlue is a great way to drive your PHP application... whether you've
just started learning PHP, or need to deploy your application, BadBlue
is easy, fast and free:
PHP Help Center
How do I get started with PHP?
What companies are running PHP? Here's a reprint of our list from last month:
MCI/Worldcom, Dialpad, Google, Mitsubishi, Redhat, MP3.com, Lycos,
Ericsson, Volvo, NASA, the W3C, SourceForge, Honda, Xoom, WinAmp,
Sony Music, Cap Gemini Ernst & Young, the US Army, UPI, the New
York Yankees, Southwestern Bell, the San Diego Zoo, the Oakland
Raiders, Audi, Subaru, VA Linux, Winamp, Duke University, Quicken,
The Village Voice, Undernet, Access Micro... the list goes on.