/**
* return an array with variations for this user
**/
function get_variation_identification($userid = 0, &$already = array())
{
if (!$this->instance->usevariations || isset($already[$this->instance->id])) {
//Avoid infinite recursion
return array();
}
$already[$this->instance->id] = true;
if ($this->instance->basedon) {
$basevpl = new mod_vpl(false, $this->instance->basedon);
$ret = $basevpl->get_variation_identification($userid, $already);
} else {
$ret = array();
}
$variation = $this->get_variation($userid);
if ($variation !== false) {
$ret[] = $variation->identification;
}
return $ret;
}