Answer / jadhav yeshwanth

An Interface is like a template similar to abstract class
with a difference where it uses only abstract methods.

In simple words, an interface is like a class using
interface keyword and contains only function
declarations(function with no body).

An Interface should be implemented in the class and all the
methods or functions should be overwridden in this class.

for eg:

interface InterfaceName{
function fun1();
function fun2(a,b);
}

class ClassName implements InterfaceName{
fuction fun1(){
function implementation.......
}
fuction fun2(a,b){
function implementation.......
}
}

Answer / asish kumar khuntia(mithu)

Interface is a object oriented concept,
It is the place where we can define the function.
When a class use that interface in that class the total
function body part will describe.
after that we can call that function in other class and we
are get result.

Answer / thirupathi rao

Interface is a prototype of method body.
when ever we want to develop the application by third party
vendor people, at that time we have to provide only interface.
why because the people gives the implementation in their own
way so we have to provide the interface.

Answer / sanjeev kumar

Interface: Since we all knows that PHP does not support the
multiple inheritance. But don't worry we have an excellent
idea to do the multiple inheritance in php is Interface.
Interface is just like a class using interface keyword and
contains only function declarations(function with no body).
function is defined in the classes where you call it.

Ex:-

interface FirstInterfName{
function Add();
function Sub(10,5);
}

interface SecondInterfName{
function glbfunc1();
function glbfunc2();
}


class ClassName implements FirstInterfName,SecondInterfName
{
fuction Add()
{
$a = 5;
$a = $a + 1;
echo $a;
}

fuction Sub($a,$b)
{
$c = $a -$b;

echo $c;
}

function glbfunc1()
{
Implements here method...............
}

function glbfunc2()
{
Implements here method...............
}

}

Answer / nur nahid hasan

Interface: Since we all knows that PHP does not support the
multiple inheritance. But don't worry we have an excellent
idea to do the multiple inheritance in php is Interface.
Interface is just like a class using interface keyword and
contains only function declarations(function with no body).
function is defined in the classes where you call it.

Ex:-

interface FirstInterfName{
function Add();
function Sub(10,5);
}

interface SecondInterfName{
function glbfunc1();
function glbfunc2();
}


class ClassName implements FirstInterfName,SecondInterfName
{
fuction Add()
{
$a = 5;
$a = $a + 1;
echo $a;
}

fuction Sub($a,$b)
{
$c = $a -$b;

echo $c;
}

function glbfunc1()
{
Implements here method...............
}

function glbfunc2()
{
Implements here method...............
}

}

Answer / raju

Interface gets useful when you need to extend a class from
more than one parent class since class can not do this.

Why would you want to implement just a single interface on a
class. After all, a class already has everything that an
interface has.

Answer / sivannarayana

interface = multiple inheritance

means:
An interface is a named collection of method definitions, without implementation.

example:
interface interfaceName{
public function func1();
public function func2();
}

//we will use this interface as
class ClassName implements interfaceName
{
//note all interface func's must implement here
}

Answer / karthi

interface =multiple inheritance

means:
An multiple inheritance is not supported in php that time we
using interface. It is implements two baseclasses but class
extends only one class.

Answer / neakdek

Why you can :

interface FirstInterfName{
function Add();
function Sub(10,5); // this line can u pass 10,5 like this
}

Answer / johan

in english? lol

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