... Classes and Objects . Next . ... The :: operator is being used for this. class A { function example () { echo I am the original function A:: example (). br \n ; } } class B extends A { function example () { echo I am the redefined function B:: example (). br \n ; A:: example (); } } // there is no object of class A. // this will print // I am the original function A:: example (). br A:: ... There are class functions, but there are no class variables. ...