插入时自动递增不是主键的列

时间：2019-03-06 17:57:20

标签： php html mysql database

我在数据库中有一列名为trackingcode的列，当它插入数据库时​​它会生成3个随机数，是否有一种方法或代码可以使它按顺序生成数字？ eg. 001, 002 and so on...

我考虑过使其成为数据库的主键，这样我就可以自动对其进行增量，但是如果有一种方法可以通过编码来实现，那就太好了。

这是插入代码：

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

$connect = mysqli_connect("localhost", "root", "", "pcrequest");
if(isset($_POST["reqname"]))
{
 $length = 3;
 $trackingcode = str_pad($trackingcode, 3, '0', STR_PAD_LEFT);
 $trackingcode++;
 $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 = '';

2 个答案:

答案 0 :(得分：0)

无需更新sql数据库就可以实现类似目的的一种方法是，检索上一个跟踪代码，然后使用类似的东西生成下一个：

PHP 

@Configuration
class ManagementWebSecurityConfigurerAdapter extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .requestMatchers(
                        EndpointRequest.to(HealthEndpoint.class, InfoEndpoint.class))
                .permitAll().anyRequest().authenticated().and().formLogin().and()
                .httpBasic();
    }

}

您应该考虑将索引添加到跟踪代码列以提高效率

希望这对您有帮助

答案 1 :(得分：0)

使用它，希望对您有所帮助。

    $connect = mysqli_connect("localhost", "root", "", "pcrequest");
    if(isset($_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 != '')
    {
        $trackingQuery = mysqli_query($con,"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.'"); 
        ';
    }

    }
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