Question

const
   SOME_PATH = __DIR__ . '/blabla.bla';

Doesn’t work I get a parse error:

expecting ','' or‘;”

wtf!?

Answer 1

The problem isn’t the constant, it’s that you’re defining a class variable as a string using a non-literal.

const SOME_PATH = __DIR__;

Is fine, but once you start using concatenation, the parser throws a hissy fit.

It’s the same reason why this works:

class myClass {
    public $something = "something";
}

But this doesn’t:

class myClass {
    public $something = "some" . "thing";
}