What are access specifiers?

An access specifier is a code element that is used to determine which part of the program is allowed to access a particular variable or other information. Different programming languages have different syntax to declare access specifiers. There are three types of access specifiers in PHP which are:

• Private: Members of a class are declared as private and they can be accessed only from that class.
• Protected: The class members declared as protected can be accessed from that class or from the inherited class.
• Public: The class members declared as public can be accessed from everywhere.