help with function

Date: 10/20/06 (PHP Community) Keywords: no keywords

this functions supposed to take an array (similar users) which tends to look like

Array
(
    [3] => Array
        (
            [64] => Jetzxia
            [959] => Yanami Prower
            [1206] => tell me im hot
        )

)

Array
(
    [4] => Array
        (
            [64] => Jetzxia
            [959] => Yanami Prower
        )

    [3] => Array
        (
            [1206] => tell me im hot
        )

)

function update_similarusers($similarusers, $users)
{
	global $vbulletin;

if (!empty($similarusers))
	{
		$agreedanswers = unserialize($similarusers);
		$count = 0;

if (!is_array($agreedanswers))
		{
			$founduser = FALSE;
		}
		else
		{// is an array so let's find user
			foreach ($agreedanswers AS $numagreed => $useragreed_array)
			{// checking through each of the answers they agreed, most agreed first, so it counts down.
				foreach ($useragreed_array AS $user)
				{// this is each of the users within the above array
					$username = $user;
					$useragreed_array = array_flip($useragreed_array);

foreach ($users = explode(',', $users) AS $userid)
					{// this is checking through the users that agreed to the question just
						$founduser = array_search($userid, $useragreed_array);

if ($founduser)
						{// returns username of found user
							$agreedanswers[intval($numagreed+1)][$useragreed_array[$founduser]] = $founduser;
							$agreedanswers[intval($numagreed+1)] = array_unique($agreedanswers[intval($numagreed+1)]);
							unset($agreedanswers[$numagreed][$useragreed_array[$founduser]]);
							unset($unfound[$useragreed_array[$founduser]]);
							if (empty($agreedanswers[$numagreed]))
							{// if no one else is in the array, unset it.
								unset($agreedanswers[$numagreed]);
							}
						}
						else
						{
							if (is_numeric($userid))
							{
								$unfound[$userid] = $userid;
							}
						}
					}
				}
			}
			@ksort($agreedanswers[intval($numagreed+1)]);
			@krsort($agreedanswers);

foreach ($agreedanswers AS $k => $v)
			{
				if (empty($v))
				{
					unset($agreedanswers[$k]);
				}
			}
		}

$unfound_check = @array_values($unfound);

if (!$founduser AND !empty($unfound_check[0]))
		{
			$getusers = $db->query("
				SELECT userid, username
				FROM user
				WHERE userid IN(0," . implode(',', $unfound) . ")
			");

while ($getuser = $db->fetch_array($getusers))
			{
				$agreedanswers['1'][$getuser['userid']] = $getuser['username'];
			}
		}
		return serialize($agreedanswers);
	}
	else
	{
		if (!empty($users))
		{
			$getusers = $db->query("
				SELECT userid, username
				FROM user
				WHERE userid IN(0,$users)
			");

while ($getuser = $db->fetch_array($getusers))
			{
				$userlist[$getuser['userid']] = $getuser['username'];
			}

foreach (explode(',', $users) AS $k => $v)
			{
				$agreedanswers['1'][$v] = $userlist[$v];
			}

return serialize($agreedanswers);
		}
	}
}

Source: http://community.livejournal.com/php/504468.html

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