/**
* 用户下载走势
* @param int $stationid 车站id
* @param date $sdate 起始日期
* @param date $edate 结束日期
*/
public function UserDown($stationid, $sdate, $edate)
{
$sdate = date('Y_m_d', strtotime($sdate));
if (!$edate) {
$where_date = " and date = '{$sdate}'";
} else {
$edate = date('Y_m_d', strtotime($edate));
$where_date = " and date BETWEEN '{$sdate}' AND '{$edate}'";
}
$obj = new Psys_StationRule();
return $obj->UserDown($stationid, $where_date);
}