PHP program to demonstrate the example of a simple interface

Program/Source Code:

The source code to demonstrate the example of a simple interface is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

<?php
//PHP program to demonstrate the example of 
//simple interface.
interface Inf
{
    public function fun1();
    public function fun2();
}

class Sample implements Inf
{
    public function fun1()
    {
        printf("fun1() called<br>");
    }
    public function fun2()
    {
        printf("fun2() called<br>");
    }
}

$obj = new Sample();

$obj->fun1();
$obj->fun2();
?>

Output:

fun1() called
fun2() called

Explanation:

In the above program, we created an interface Inf that contains the declaration of two functions fun1() and fun2().

After that we created a class Sample, here we used the implements keyword to implement an interface into the class, then we defined the functions fun1() and fun2() into the Sample class.

At last, we created the object of the Sample class and called functions that will print the appropriate message on the webpage.