CODEWITHSUNDEEP
phpinterfacemagic-methods
Emanuel Landeholm
Emanuel Landeholm

Reputation: 1408

How to use interfaces and magic methods in PHP

I want to use interfaces, but some of my implementations rely on magic methods such as __invoke and __call. I have to remove signatures of methods that may be invoked magically (in any implementation) from the interface. Which leads to the anti pattern Empty Interface (Yeah, I just made that up).

How do you combine interfaces and magic methods in PHP?

Upvotes: 18

Views: 5550

Answers (1)

David Harkness
David Harkness

Reputation: 36562

Have all of the interface methods in your implementations dispatch to __call(). It involves a lot of crummy cut-and-paste work, but it works.

interface Adder {
    public function add($x, $y);
}

class Calculator implements Adder {
    public function add($x, $y) {
        return $this->__call(__FUNCTION__, func_get_args());
    }

    public function __call($method, $args) {
        ...
    }
}

At least the body of each method can be identical. ;)

Upvotes: 16

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