Asked 7 years ago
16 Mar 2017
Views 826
jaydeep

jaydeep posted

how to use interface in PHP ?

How to use interface in PHP ?


interface A {

public function A(){
}

}


How to implement interface in PHP ?
what is the best way to use interface in PHP ?
you can extends or implements interface -  
Mar 16 '17 00:24
jessica

jessica
answered Apr 24 '23 00:00

In PHP, an interface defines a set of method signatures without any implementation. The purpose of an interface is to provide a contract between a class and the outside world, specifying what methods the class must implement. Here's how you can use an interface in PHP:

1.Define an interface using the interface keyword:


interface MyInterface {
    public function method1();
    public function method2($param);
}

2.Implement the interface in a class using the implements keyword:


class MyClass implements MyInterface {
    public function method1() {
        // implementation of method1
    }

    public function method2($param) {
        // implementation of method2
    }
}

3.Use the implemented interface methods in your code:

$obj = new MyClass();
$obj->method1();
$obj->method2($param);

You can implement multiple interfaces by separating them with commas in the implements keyword:




class MyClass implements Interface1, Interface2 {
    // implementation
}

Remember that if a class implements an interface, it must provide an implementation for all of the methods defined in the interface. If a method is not implemented, a fatal error will be thrown.
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