如何使用post值区分和回显日期

我有一个html表单，从那里我张贴值为1-3天，3-5天的头，并试图列出所有的表值在数据表格式，但我得到了显示表的日期差异打击。这是我的代码。

    $day = 24*60*60; //seconds 
    $ticket_dates = $UtilObj->get_results("select date1,date2 from tickets where status=1"); 
    foreach($ticket_dates as $dates){
        $datediff = $dates->date2 - $dates->date1;    
       if($datediff > $day)
        {
            $days = round($datediff/$day,0);
        }
        else 
        {
           $days = 1;
        }
       $date_values = str_replace(' ', '', $_REQUEST["status_filter"]);  
            // here its coming as 1-3days,3-5days,..
           if ($date_values  == '1-3days'){            
                    $date_interval = 'and '.$days < 4;
                }else if ($date_values  == '3-5days'){               
                    $date_interval = 'and '.$days < 6;
                }else if($date_values  == '5-8days'){              
                    $date_interval = 'and '.$days < 9;
                }else if($date_values  == 'Above8days'){                 
                    $date_interval = 'and '.$days > 8;
                }else {
                      $date_interval = '';
                    }
        }

之后，我只需要显示用户选择的日期差异

  $myquery = "SELECT t_id,t_date,t_name from t_table where 1=1  $date_interval order by t_id desc;";  

谢谢你的建议