add has-method

[prolic]

No description provided.

[marc-mabe]

For isValidName: you can simply do defined("MyEnum::NAME") instead.

[prolic]

So should I remove isValidName? I like this method because it allows me to do this:

$enum->isValidName('FOO');

without having the enum-class at hand.

[prolic]

$foo = 'BAR';

MyEnum::isValid($bar)

VS

defined(MyEnum::class . '::' . $bar)

I would prefere the first version (with method), it's less code to write and more explicit, imho. But you decide @marc-mabe.

[prolic]

Damn scrutinizer won't succeed

[marc-mabe]

I don't see a real need for isValidName()
For isValidOrdinal(): You can simply check: $ord < count(MyEnum::getConstants())

For isValid() it makes sense because there is no simple and fast way to check (I only don't like the name).
What about:

final public static function has($enumerator) : bool

MyEnum::has(MyEnum::ONE); // true
MyEnum::has(MyEnum::ONE()); // true
MyEnum::has(AnotherEnum::ONE()); // false
MyEnum::has('unknown'); // false

[prolic]

changed as requested

[marc-mabe]

return in_array($value, $constants, true);

[prolic]

done

[marc-mabe]

Please can you also address my small code comments and rebase all your commits together.
Thanks!

[prolic]

I hope this is okay this time ;)