Use $this to refer to the current **object**. Use self to refer to the current **class**. In other words, use $this->member for non-static members, use self::$member for **static** members.
Use $this to refer to the current
object. Use self to refer to the current
class. In other words, use $this->member for non-static members, use self::$member for
static members.
"self" (not $self) refers to the type of class, where as $this refers to the current instance of the class. "self" is for use in static member functions to allow you to access static member variables. $this is used in non-static member functions, and is a reference to the instance of the class on which the member function was called.
Because "this" is an object, you use it like: $this->member Because "self" is not an object, it's basically a type that automatically refers to the current class, you use it like: self::member
To see if two files are identical in Linux use the
sum command