How good is PHP performance?

Question

This is a follow up to a recent post I\'ve seen which suggests that PHP performance is poor:

\"PHP. IS. ALWAYS. THE. BOTTLENECK. My server farms, let me show you them! P

Answer 1

Using the correct algorithms and datastructures is much more relevant to the performance than using a certain programming language (as long as it's possible to express them in the chosen language).

So PHP can be even faster than C++ if the PHP-programmer knows what he's doing.