i am confused in oops,i am confused in term abstract class extends and interface implements in oops

Question

Greeting !! i wnt to know more about abstact class and Interface . and terminology to inhereted like abstract class extends and interface implements.need a help .please solve my problem.provide some example with matter .

Answer 1

An abstract class is a class which is NOT instantiated, so there is no such thing like this:

<?php
   $p = new person();
?>

The abstract class can only be inherited and not used directly. You use it as a base class where you put all the code that other classes can share.

An interface is like an agreement which methodes a class must implement:

// Declare the interface 'iExample'
interface iExample
{
    // methodes
}

// Implement the interface
// This will work
class Thingy implements iExample
{
    // implement the methodes specifies in the interface
}