I was explaining to a Java developer why his method call wasn't working. He just needed to add $this->method_name();
He then asked me, "Why do I need to add $this to the method when it's declared in the same class?"
I didn't really know how to answer. Maybe it's because PHP has a global namespace and it you need to explicitly tell it that the method you are looking for belongs to the current class? But then why doesn't PHP check the current class for the method BEFORE looking at the global namespace?
Someone enlighten me. :)