When to use self over $this?

Question

In PHP 5, what is the difference between using self and $this?

When is each appropriate?

Answer 1

$this refers to the current class object, self refers to the current class (Not object). The class is the blueprint of the object. So you define a class, but you construct objects.

So in other words, use self for static and this for none-static members or methods.

also in child/parent scenario self / parent is mostly used to identified child and parent class members and methods.