Notice: undefined index: dec in...

[duffy832]

I am making changes to a php framework I downloaded and am new to PHP.

I have this error:

Notice: Undefined index: dec in D:\Hosting\4156 690\html\idingo \modules\groups \group_sort.php on line 49

Line 49 looks like this:

		if (myNum($groupsSelect) > 0) {
			
			$this_counter= 0;
			
			for ($i = 0; $i <myNum($groupsSelect) ; $i++)	{

				$groups=myF($groupsSelect);
				$this_counter++;
	49--->		[B]$counter_of_thumbs=$_GET['dec'];[/B]
				$upper_limit=$counter_of_thumbs+10;

				if ($this_counter>$counter_of_thumbs && $this_counter<=$upper_limit)	{

					$statsSelect = myQ("SELECT `comments`,`gallery`,`users` FROM `[x]groups` WHERE `idgroups`='".$groups[4]."' ");
					$statsArray=myF($statsSelect);
					$galleryArray=unpk($statsArray[1]);
					$usersArray=unpk($statsArray[2]);
					$commentsArray=unpk($statsArray[0]);
				
				if (is_array($usersArray))	{

					$member_num=sizeof($usersArray);
				
				}

I am not sure how this works. I am assuming I haven't defined this variable but I have no idea where this definition would be done.

Thank you for any help you may give.

[Dormilich]

it would be done in the URL. best practice is to test any of the Superglobals ($_GET, $_POST, $_SESSION, $_COOKIE, etc.) before accessing the value.

if (!isset($_GET['dec'])
{
    // do error handling
}