Rasmus (of PHP fame) and me exchanged these nice words on Freenode’s #php (when discussing some PHP execution efficiency issues):
<Rasmus_> if that is your bottleneck, you are the world's best
PHP developer
<Rasmus_> domas: then you are writing some very odd code.
I think you will find you spend most of your time in
syscalls and db stuff
<domas> Rasmus_: I can tell you're the best database developer, if
you spend most of your time in db stuff :)
You can immediately see different application engineering perspectives :)
domas mituzas 
Flamewar like childrens…. ¬¬
I spend 99.5% of my time optimizing the db, maybe that makes me the best PHP developer too!