PHP Code editor should check for unimplemented methods in classes that extends a abstract class or implements interfaces.

    interface ICommand
    {
        function execute();
    }

    class SomeCommand implements ICommand
    {

    }

I want to see the warning when i run the file with php interpreter.

(Fatal error: Class SomeCommand contains 1 abstract method and must therefore be declared abstract or implement the
remaining methods (ICommand::execute) in SomeCommand.php on line 3)

abstract class AbstractClass
{
    abstract function abstractMethod();
}

class ConcreteClass extends AbstractClass
{

}

Code Editor also should warn about not-overrided abstract methods when extending from abstract class

(Fatal error: Class ConcreteClass contains 1 abstract method and must therefore be declared abstract or implement the
remaining methods (AbstractClass::abstractMethod) in ConcreteClass.php on line 1)