/**
* Returns true, if the given user is a buddy of the active user.
*
* @return boolean
*/
public static function isBuddy($userID)
{
if (self::$buddies === null) {
self::$buddies = array();
if (WCF::getUser()->buddies) {
self::$buddies = explode(',', WCF::getUser()->buddies);
}
}
if (count(self::$buddies)) {
return in_array($userID, self::$buddies);
}
return false;
}