在递增数字上添加静态前缀

时间：2019-03-09 15:58:37

标签： php html mysql database

我在表单上创建了名为trackingcode的列，每次您插入新数据时该列都会增加。

现在我考虑添加一个前缀，然后添加数字，所以我要做的是：

$Newtracking = mysqli_fetch_assoc($trackingQuery)['REQ' . 'maxtrack'] + 1 ;

REQ是我想要的前缀，但是没有用。我做错了吗？

现在其他人说我可以在视图上添加前缀。我不能这样做，我也需要在数据库中插入前缀，其原因是因为我有一个搜索栏，可以从数据库中搜索值。

这是整个插入代码：

$connect = mysqli_connect("localhost", "root", "", "pcrequest");
if(isset($_POST["reqname"]))
{
 $length = 3;
 $req_date = $_POST["req_date"];
 $reqname = $_POST["reqname"];
 $date = $_POST["date"];
 $empname = $_POST["empname"];
 $position = $_POST["position"];
 $account = $_POST["account"];
 $platform = $_POST["platform"];
 $processor = $_POST["processor"];
 $ram = $_POST["ram"];
 $monitor = $_POST["monitor"];
 $phone = $_POST["phone"];
 $phonetype = $_POST["phonetype"];
 $headset = $_POST["headset"];
 $req_table = $_POST["req_table"];
 $req_chair = $_POST["req_chair"];
 $approval = $_POST["approval"];
 $status = $_POST["status"];
 $query = '';


  for($count = 0; $count<count($reqname); $count++)
  {
  $req_date_clean = mysqli_real_escape_string($connect, $req_date[$count]);
  $reqname_clean = mysqli_real_escape_string($connect, $reqname[$count]);
  $date_clean = mysqli_real_escape_string($connect, $date[$count]);
  $empname_clean = mysqli_real_escape_string($connect, $empname[$count]);
  $position_clean = mysqli_real_escape_string($connect, $position[$count]);
  $account_clean = mysqli_real_escape_string($connect, $account[$count]);
  $platform_clean = mysqli_real_escape_string($connect, $platform[$count]);
  $processor_clean = mysqli_real_escape_string($connect, $processor[$count]);
  $ram_clean = mysqli_real_escape_string($connect, $ram[$count]);
  $monitor_clean = mysqli_real_escape_string($connect, $monitor[$count]);
  $phone_clean = mysqli_real_escape_string($connect, $phone[$count]);
  $phonetype_clean = mysqli_real_escape_string($connect, $phonetype[$count]);
  $headset_clean = mysqli_real_escape_string($connect, $headset[$count]);
  $req_table_clean = mysqli_real_escape_string($connect, $req_table[$count]);
  $req_chair_clean = mysqli_real_escape_string($connect, $req_chair[$count]);
  $approval_clean = mysqli_real_escape_string($connect, $approval[$count]);
  $status_clean = mysqli_real_escape_string($connect, $status[$count]);
  if($req_date_clean != '' && $reqname_clean != '' && $date_clean != '' && $empname_clean != '' && $position_clean != '' && $account_clean != '' && $platform_clean != '' && $processor_clean != '' && $ram_clean != '' && $monitor_clean != '' && $phone_clean != '' && $phonetype_clean != '' && $headset_clean != '' && $req_table_clean != '' && $req_chair_clean != '' && $approval_clean != '' && $status_clean != '')
  {
   $trackingQuery = mysqli_query($connect,"SELECT Max(trackingcode) as maxtrack FROM `request`");
        if( mysqli_num_rows($trackingQuery) > 0)
        {
        $Newtracking = mysqli_fetch_assoc($trackingQuery)['maxtrack'] + 1 ;
        }
        else{
        $Newtracking = 1;
        }
        $query .= '
        INSERT INTO request(trackingcode, req_date, reqname, date, empname, position, account, platform, processor, ram, monitor, phone, phonetype, headset, req_table, req_chair, approval, status) 
        VALUES("'.$Newtracking.'", "'.$req_date_clean.'", "'.$reqname_clean.'", "'.$date_clean.'", "'.$empname_clean.'", "'.$position_clean.'", "'.$account_clean.'", "'.$platform_clean.'", "'.$processor_clean.'", "'.$ram_clean.'", "'.$monitor_clean.'", "'.$phone_clean.'", "'.$phonetype_clean.'", "'.$headset_clean.'", "'.$req_table_clean.'", "'.$req_chair_clean.'", "'.$approval_clean.'", "'.$status_clean.'"); 
        ';
  }

这是我的数据库架构：

DB Schema

我数据库中的当前trackingcode值：

Current trackingcode values 

$connect = mysqli_connect("localhost", "root", "", "pcrequest");
if(isset($_POST["reqname"]))
{
 $length = 3;
 $trackingcode = 'TS-' . substr(str_shuffle("0123456789"), 0, $length);
 $req_date = $_POST["req_date"];
 $reqname = $_POST["reqname"];
 $date = $_POST["date"];
 $empname = $_POST["empname"];
 $position = $_POST["position"];
 $account = $_POST["account"];
 $platform = $_POST["platform"];
 $processor = $_POST["processor"];
 $ram = $_POST["ram"];
 $monitor = $_POST["monitor"];
 $phone = $_POST["phone"];
 $phonetype = $_POST["phonetype"];
 $headset = $_POST["headset"];
 $req_table = $_POST["req_table"];
 $req_chair = $_POST["req_chair"];
 $approval = $_POST["approval"];
 $status = $_POST["status"];
 $query = '';
 

  for($count = 0; $count<count($reqname); $count++)
  {
  $req_date_clean = mysqli_real_escape_string($connect, $req_date[$count]);
  $reqname_clean = mysqli_real_escape_string($connect, $reqname[$count]);
  $date_clean = mysqli_real_escape_string($connect, $date[$count]);
  $empname_clean = mysqli_real_escape_string($connect, $empname[$count]);
  $position_clean = mysqli_real_escape_string($connect, $position[$count]);
  $account_clean = mysqli_real_escape_string($connect, $account[$count]);
  $platform_clean = mysqli_real_escape_string($connect, $platform[$count]);
  $processor_clean = mysqli_real_escape_string($connect, $processor[$count]);
  $ram_clean = mysqli_real_escape_string($connect, $ram[$count]);
  $monitor_clean = mysqli_real_escape_string($connect, $monitor[$count]);
  $phone_clean = mysqli_real_escape_string($connect, $phone[$count]);
  $phonetype_clean = mysqli_real_escape_string($connect, $phonetype[$count]);
  $headset_clean = mysqli_real_escape_string($connect, $headset[$count]);
  $req_table_clean = mysqli_real_escape_string($connect, $req_table[$count]);
  $req_chair_clean = mysqli_real_escape_string($connect, $req_chair[$count]);
  $approval_clean = mysqli_real_escape_string($connect, $approval[$count]);
  $status_clean = mysqli_real_escape_string($connect, $status[$count]);
  if($req_date_clean != '' && $reqname_clean != '' && $date_clean != '' && $empname_clean != '' && $position_clean != '' && $account_clean != '' && $platform_clean != '' && $processor_clean != '' && $ram_clean != '' && $monitor_clean != '' && $phone_clean != '' && $phonetype_clean != '' && $headset_clean != '' && $req_table_clean != '' && $req_chair_clean != '' && $approval_clean != '' && $status_clean != '')
  {
  	function generate ($value='',$inp=""){
       return $value.str_pad($inp,4, "0", STR_PAD_LEFT);
	}
   $query .= '
   INSERT INTO request(trackingcode, req_date, reqname, date, empname, position, account, platform, processor, ram, monitor, phone, phonetype, headset, req_table, req_chair, approval, status) 
   VALUES("'.$trackingcode.'", "'.$req_date_clean.'", "'.$reqname_clean.'", "'.$date_clean.'", "'.$empname_clean.'", "'.$position_clean.'", "'.$account_clean.'", "'.$platform_clean.'", "'.$processor_clean.'", "'.$ram_clean.'", "'.$monitor_clean.'", "'.$phone_clean.'", "'.$phonetype_clean.'", "'.$headset_clean.'", "'.$req_table_clean.'", "'.$req_chair_clean.'", "'.$approval_clean.'", "'.$status_clean.'"); 
   ';
   if(mysqli_query($connect,$query)){
      $last_id = mysqli_insert_id($connect);
      $code = generate("REQ",$last_id);
    mysqli_query($connect,"update request set trackingcode='$code'  where reqnumber='$last_id'");
  }

TB Structure

TB Duplicate

Form

Add - Form

1 个答案:

答案 0 :(得分：0)

尝试使用str_pad()

插入后，获取last insert id。pass并使用类似于此参数的生成功能

generate(prefix,last_insert_id);

例如：generate("REC",1);//REC0001 

function generate ($value='',$inp=""){
       return $value.str_pad($inp,4, "0", STR_PAD_LEFT);
}



  //Insert query

   $query = 'INSERT INTO request(req_date, reqname, date, empname, position, account, platform, processor, ram, monitor, phone, phonetype, headset, req_table, req_chair, approval, status) VALUES("'.$req_date_clean.'", "'.$reqname_clean.'", "'.$date_clean.'", "'.$empname_clean.'", "'.$position_clean.'", "'.$account_clean.'", "'.$platform_clean.'", "'.$processor_clean.'", "'.$ram_clean.'", "'.$monitor_clean.'", "'.$phone_clean.'", "'.$phonetype_clean.'", "'.$headset_clean.'", "'.$req_table_clean.'", "'.$req_chair_clean.'", "'.$approval_clean.'", "'.$status_clean.'"); ';
     if(mysqli_query($connect,$query)){
      $last_id = mysqli_insert_id($connect);
      $code = generate("REQ",$last_id);
    mysqli_query($connect,"update request set trackingcode='$code'  where reqnumber='$last_id'");
    //exec code : update tablename set trackingcode='$code'  where tableprimary_id='$last_id'
}
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