notice errors.. first Undefined index, then Undefined variable

[agentforte]

Hello,

I get the error:
Notice: Undefined index: other

the line with this error has the code:
$a = $_POST['other'];


I tried to fix the code by doing this:
if (isset($_POST['other'])){
$a = $_POST['other'];
}

but this just gave me a new error:
Notice: Undefined variable: a

I tried to define the variable:
if (isset($_POST['other'])){
var $a;
$a = $_POST['other'];
}

but then a fatal error occurs (unexpected T_VAR )

Can anyone suggest how I get rid of the 'undefined index' error properly (rather than just hiding it) so that new errors don't keep popping up?

[IP-Dope]

if(isset($_POST['other'])) {
  $a = $_POST['other'];
} 

That piece of code works fine. But the problem probably lies somewhere else in your script. I assume that in the next part of your script you are trying to use $a, but do mind that $a doesn't exist if $_POST['other'] has not been set. So in your next part where you're trying to use $a either add isset($a) or put $a = ''; before your isset($_POST['other'] part.

Like this:

$a = '';

if(isset($_POST['other'])) {
  $a = $_POST['other'];
} 

or

if(isset($_POST['other'])) {
 $a = $_POST['other'];
}

if(isset($a)) {
  // do your stuff
} 

Hope this makes sense.

Cheers,
Pepe

[SecondV]

hmm, nvmd. SP died on me, IP-Dope beat me..

However, you could also:

$a = (isset($_POST['other'])) ? $_POST['other'] : '';

[agentforte]

Thanks, that worked.