获取状态
    public function getStatus(){
      $sql = 'select setup from field as f,(select id as tid from module where name=\'coupons\') as t where t.tid=f.module_id and f.field=\'status\'';
      $res = Db::query($sql);

      $arr = unserialize($res[0]['setup']);

      $strStatus = $arr['options'];

      // var_dump(explode("\s",$strStatus));die();   //换行用PHP_EOL不行
      $arrStatus = var_dump(preg_split('/[\s]+/',$strStatus));
      
      return $arrStatus;
   }