I was reading this article the other week, but I've just come across it again. There are a few points I don't agree with, such as:

1. 1: I was always told not to do this, PHP will find the fastest way of doing things, and making it static just for the sake of it is a big no no.
2. 29: I wouldn't say echo is a function at all.
3. 35: Not everything is about speed, is it?

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