[RESOLVED] !isset() or empty()

[Sayian]

Consider the following

<?

$gid = $POST['gid'];
$id = $POST['id'];

if(!isset($gid && $id)) {

exit();

}

?>

Now , would it be better to use !isset as above , or empty when trying to check if a form variable has been passed.

[cahva]

Well in your case its always set(you set it before if). If you really want to check if its set use if (!isset($_POST['id'])) straight. I usually prefer empty() if i want to know that something is passed.

[Weedpacket]

As it happens (in case anyone else is reading this) the code as written is invalid: "$gid && $id" is not a variable, and isset() only works with variables. The test would need to be if(!isset($gid) && !isset($id)).

And to add to cahva's comment; if $POST['gid'] is not set, then the line $gid=$POST['gid'] would trigger a Notice-level message about an uninitialized variable or array index.

[laserlight]

Well, one could test with:
if (!isset($POST['gid'], $POST['id']))
I suppose.