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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.