$x = null; get_class($x) returns get_class($this) as of 5.3. I don't recall seeing a discussion of this on the list and I can't find anything about this change in the archives. The documentation is currently self-contradictory...
Under "Return Values": Returns the name of the class of which object is an instance. Returns FALSE if object is not an object. Under "Changelog": Since 5.3.0 NULL became the default value for object, so passing NULL to object now has the same result as not passing any value. (BTW, I don't see that listed in http://us.php.net/ChangeLog-5.php#5.3.0 ) I guess there hasn't been a lot of screaming about it, so maybe it isn't a big deal, but it seems like a significant BC break to me. Maybe it's just because I've been beating my head against a wall for so long trying to figure out why my code was behaving so strangely. ;) I can't believe it's impossible to differentiate between receiving an argument and not receiving an argument. Would anyone really intentionally pass a null to this function to get the result of get_class($this)? Now that I know about this BC break, I'm OK and can avoid the issue, but for the sake of the next person to hit this, I felt I should post on the topic. I almost posted a bug directly, but the behavior is documented, so I thought this would be the correct place. - Todd -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
