How to delete a PHP object from its class?

Question

I know that for some that might sound stupid, but I was thinking if I hava a delete() method in a class that removes all the object data (from DB and file system), how can I

Answer 1

Another approach is to make the delete-method static, which then could receive a PDO object and data, that determines what to delete. This way you don't need to initialise the object.