Wordpress - Registering Class methods as hook callbacks
If I need to register an action inside the class itself would it work with
Yes, it works.
$thisDocs is referring to the concrete instance needed for the callback. That's exactly like the
$foo example you give. It's just that
$this is bit more special, but it represents basically the same and it works flawlessly with callbacks in PHP.
if I have a class foo and a static method bar I can register that as the callback by passing the array
array("foo","bar")as the function name.
Yes you can do so, for the static function, you can write it as a string instead of the array as well:
foo::bar, see Callbacks Docs. Might be handy.