[RESOLVED] Undefined Index - not another one.

prkarpi

I've switched to PHP 5.3 from PHP 4. Big jump! I've worked on reworking most of my scripts. I am having a problem with "Notice: Undefined index:"
I've registered the vars with $var = $_GET(or POST)['var']; - now it gives me an error (on E_ALL) - "Notice: Undefined index:." I've read all day on this issue - couldn't find a solution. Any ideas.

Thank you.

NogDog

At a guess, you are trying to access a $POST or $GET element that was not part of the post/get data when the page was called. Check the spelling (including case) of the index being used. If the page can conceivably be called with that data element not supplied (an technically that's always possible, possibly intentionally), then you need to test for its existence and assign a default value if it's not there (or follow some other logic such as displaying an error to the user).

if(isset($_GET['foo']))
{
   $foo = $_GET['foo'];
}
else
{
   $foo = 'some default value';
}

A handy shortcut for this is the "ternary" operator:

$foo = (isset($_GET['foo'])) ? $_GET['foo'] : 'default value';

prkarpi

Thanks for the reply. You were right when you said that data was not supplied through $get & $post when page was called. Moreover, until the data is called by the user some vars are not going to be declared, but these vars are defined by $GET to make PHP 5 happy. But when I do define these vars by $GET, I get the error of Undefined Index. Does this make sense?

So my question is how to make the Index error go away without changing error_reporting from E_ALL and without declaring a value for these vars.

Thank you once again!

NogDog

I think that's what I addressed in my first reply, unless I'm misunderstanding you. Instead of this...

$var = $_GET['var'];

...do this...

$var = (isset($_GET['var'])) ? $_GET['var'] : '';

If that's not the issue, then I may need to see some specific code that better illustrates the situation.

prkarpi

NogDog. It worked like a charm. Thank you.

My mistake. I looked at your code and thought it was something that I have tried before .