Are there any best practices or strategies for ensuring all necessary interface methods are implemented in PHP classes?

To ensure all necessary interface methods are implemented in PHP classes, one best practice is to use the `implements` keyword when declaring a class that implements an interface. This will prompt an error if any required methods are missing in the class. Another strategy is to use an abstract class that implements the interface and provides default implementations for the methods, which can then be overridden in the child classes.

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

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

    public function method2() {
        // implementation
    }
}