PHP performance reliability on busy sites

How well does PHP hold up on very busy sites that get a lot of hits? Has anyone looked at its performance and reliability especially compared to other available technologies such as ASP? I'm investigating doing a small web site project in PHP, but it needs to be scalable and reliable if the site were to get really busy. ======================================================================= Patrick Dunford, Christchurch, NZ - http://pdunford.godzone.net.nz/ I tell you that one greater than the temple is here. -- Matthew 12:6 http://www.heartlight.org/cgi-shl/todaysverse.cgi?day=20001206 ======================================================================= Created by Mail2Sig - http://pdunford.godzone.net.nz/software/mail2sig/