[RESOLVED] Undefined Index error

[closer2u2]

With this snippet I get some related tags in a tag cloud (random keywords like on a blog)

function cloudTags($cloudquery) 
	{
		global $config;
		$tags  = array();
		$cloud = array();



	$query = mysql_query($cloudquery);

	while($t = mysql_fetch_array($query)) {
		$db = explode(' ', $t[0]);

    	while(list($key, $value) = each($db)){
       		$keyword[$value] += 1;
    	}
	}

This code works perfectly and gives me random tags, but, in my error log, I get PHP notices for each and every tag!

[Tue Aug 05 00:33:55 2008] [error] [client 90.145.16.29] PHP Notice: Undefined index: volvo in /var/www/httpdocs/include/function.php on line 580

Line 580 corresponds with the

$keyword[$value] += 1;

above

I tried to enclose the $value in quotes but that makes the whole function invalid....

Can anyone point me in the right direction?

[NogDog]

It's because you are trying to increment an array element which does not yet exist. You could do something like:

$keyword[$value] = (isset($keyword[$value])) ? $keyword[$value] + 1 : 1;

[closer2u2]

Thanks for this help, it was exactly the problem.

[Kudose]

Glad to hear you're problem is resolved. If you don't have any more questions, please mark this thread resolved using the thread tools near the top of the page.