function JLMS_checkCourseGID($user_id, $course_gid)
{
global $JLMS_DB, $JLMS_CONFIG;
$acl =& JLMSFactory::getJoomlaACL();
//Cache functions (save data about user gid, course gid and access results in JLMS_CONFIG)
$cache_user_gids = $JLMS_CONFIG->get('cache_user_gids', array());
$user_item = 'user_' . $user_id;
if (isset($cache_user_gids[$user_item]) && $cache_user_gids[$user_item]) {
$userGids = $cache_user_gids[$user_item];
} else {
if ($user_id) {
if (JLMS_J16version()) {
$userGids = $acl->getGroupsByUser($user_id);
} else {
$query = "SELECT gid FROM #__users WHERE id = " . $user_id;
$JLMS_DB->SetQuery($query);
$userGids[] = $JLMS_DB->LoadResult();
}
} else {
$userGids = array();
}
$cache_user_gids[$user_item] = $userGids;
$JLMS_CONFIG->set('cache_user_gids', $cache_user_gids);
}
$result = false;
$ac_groups = array(0);
if ($course_gid) {
$ac_groups = explode(",", $course_gid);
}
if (in_array(0, $ac_groups)) {
$result = true;
} elseif ($user_id && is_array($ac_groups)) {
$adminGroups = JLMS_getAdminGroups();
$ac_groups = array_unique(array_merge($ac_groups, $adminGroups));
foreach ($ac_groups as $ag) {
$cache_gid_checked = $JLMS_CONFIG->get('cache_gid_checked', array());
foreach ($userGids as $userGid) {
$cg_item = 'check_gid_' . $userGid . '_' . $ag;
if (isset($cache_gid_checked[$cg_item])) {
if ($cache_gid_checked[$cg_item]) {
$result = true;
break;
}
} else {
if ($userGid == $ag) {
$result = true;
break;
}
if ($acl->is_group_child_of(intval($userGid), intval($ag), 'ARO')) {
$result = true;
break;
}
}
$cache_gid_checked[$cg_item] = $result;
$JLMS_CONFIG->set('cache_gid_checked', $cache_gid_checked);
}
}
}
return $result;
}
