如何使我的ID從12-09CB1到12-09CB0001自動增量？

Question

您好我曾使用過這個下面的代碼

$last_id=mysql_query("select * from complaint_list order by complaint_id Desc Limit 1"); 
$complaint_last=mysql_fetch_array($last_id); 

$complaintid=$complaint_last['complaint_id']; 
$complaintid = str_pad($id, 4, '0'); 
$year = substr($get[0],2,2); 
$complaint_number=$year."-".$get[1]."CB".$complaintid; 

mysql_query("insert into complaint_list(complaint_number, sap_number, complaint_type, circle_id) values('" . $complaint_number . "','" . $_POST['sap_number'] . "', 'DU', " . $_POST['circle'].")"); 

它顯示爲12-09CB0000所有的時間。

請幫我

Answer 1

您好我解決了這個問題，

只需更換該代碼

$last_id=mysql_query("select *,lpad(complaint_id,4,'0') as cid from complaint_list order by complaint_id Desc Limit 1"); 
    $complaint_last=mysql_fetch_array($last_id); 
    $complaintid=$complaint_last['cid']; 
    $complaintid = str_pad($complaintid, 4, '0'); 
    $year = substr($get[0],2,2); 
    $complaint_number=$year."-".$get[1]."CB".$complaintid;