/**
* Determines if user belongs to specified group
*
* This is part of the Geeklog security implementation. This function
* looks up whether a user belongs to a specified group
*
* @grp_to_verify        string          Group we want to see if user belongs to
* @uid                  string          ID for user to check
* @cur_grp_id           string          Current group we are working with in hierarchy
*
*/
function SEC_inGroup($grp_to_verify,$uid='',$cur_grp_id='')
{
    global $_TABLES, $_USER, $_SEC_VERBOSE, $_GROUPS;

    if (empty($uid)) {
        if (empty($_USER['uid'])) {
            $uid = 1;
        } else {
            $uid = $_USER['uid'];
        }
    }

    // I for sme reason $_GROUPS is empty here, populate it
    // 9 times out of 10 $_GROUPS will already exist
    if (empty($_GROUPS)) {
        $_GROUPS = SEC_getUserGroups($_USER['uid']);
    }

    if (is_numeric($grp_to_verify)) {
        if (in_array($grp_to_verify, $_GROUPS)) {
           return true;
        } else {
           return false;
        }
    } else {
        if (!empty($_GROUPS[$grp_to_verify])) {
            return true;
        } else {
            return false;
        }
   }
}