Re: Function Misbehaving

Beginners beware ... small, potential head-fryer coming up... Richard Lynch wrote: > I personally would use is_null($url) to test if it was NULL. > > isset() is not the weapon of choice for that, imho... > > No idea if that will "fix it" as I've never tried to use isset() to > test for NULL and have no idea what it does. occasionally we need to eat our own dogfood Richard (i.e. test stuff) :-) ... php -r '$a = null; $b = array(null); var_dump(isset($a), isset($b[0]));' which is not helpful to the beginner because setting $a to NULL means $a is not set, counter-intuitive to say the least :-) but we both know this is not going to change. BUT even when it's not set it kind of is ... php -r ' error_reporting(E_ALL); $a = null; var_dump(isset($a), $a); var_dump(isset($b), $b); ' niether $a nor $b are set but $a is still more set than $b. are you confused? :-) I guess is_null() is the weapon of choice here!