PHP vs. ColdFusion

My employer has (finally) decided to take full advantage of our 
intranet, and wants to move from client-server applications to 
web-based applications. To that end, we're trying to determine the best 
platform for our applications. We're a Microsoft shop, with Microsoft 
SQL Server 2000 for all of our databases (that won't change any time 
soon, if ever). Due to past experience that I won't get into, we (the 
Development group) have all agreed that ASP.Net is out (at least for 
the short term).

We had the opportunity to visit a local enterprise that has deployed 
ColdFusion, and they couldn't stop singing its praises. I'm partial to 
PHP, even after sampling Coldfusion, so what I would like is some 
"ammunition" that I can take into a meeting to "sell" management on PHP 
instead of ColdFusion. I've already been harping on the difference in 
cost, so I'm looking for other points to go with. Besides, we'll 
probably invest in Zend products if we choose PHP, and Macromedia has 
government rates available; I don't have any numbers (yet), but the 
cost difference may not be that great in the end.

Any input would be greatly appreciated. Opinions are welcome 
(especially from programmers with experience in both), but I have to 
"sell" it to management (I'm already on the PHP side), so links to data 
or articles comparing the two are best.

Thanks in advance,
Rick
-- 
Rick Emery

"When once you have tasted flight, you will forever walk the Earth
with your eyes turned skyward, for there you have been, and there
you will always long to return"
                                              -- Leonardo Da Vinci