Hi!
This is also the documented as the general convention:
http://de.php.net/manual/en/functions.internal.php
While there are exceptions to this on purpose: For instance get_object
is documented to "Return FALSE if /object/ is not an object" (this
exception was discussed in detail in the past)
I would argue for is_object getting argument which is not an object is
not an args parsing error (since this function is supposed to accept
args of all types). Getting no argument, on the other hand, is. Though
is_object would return false in both cases. But is_numeric(), for
example, would produce null when called with no arguments. It's a real
mess there.
Thanks however for bringing up that manual part - I didn't know it's
there. That makes me think case for NULL is much stronger.
--
Stanislav Malyshev, Zend Software Architect
s...@zend.com http://www.zend.com/
(408)253-8829 MSN: s...@zend.com
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