Final keyword Usage Analysis in php and phpfinal keyword usage

Final keyword Usage Analysis in php and phpfinal keyword usage

This example describes the use of final keywords in php. We will share this with you for your reference. The details are as follows:

Final keywords can only be used to define classes and methods.

Classes marked with the final keyword cannot be inherited.

Final class Person {...} class Student extends Person {.......}

An error message is displayed. Fatal error: Class Student may not inherit from final class (Person)

The method marked with the final keyword cannot be overwritten by the quilt class.

Class Person {final function Say () {...} class Student extends Person {function Say (){......}}

The following error occurs:

Fatal Error: Cannot Override final method Person: say ()