添加用户信息并在其他页面中登录信息

Question

所以我想在第一页上进行注册，即用户将在其中输入名称，姓氏等的用户信息，然后将其记录到数据库中，并重定向到用户所在的帐户信息页输入用户名和密码并记录在另一个数据库中，因此我必须对学生表（存储所有信息的表）和用户表（存储帐户信息的表），以便用户的userID将是学生的外键，但是我无法将用户的ID号放在存储第一个页面的学生表中，因此，如果我使用mysqli_insert_id，它可以将最后插入的用户的ID插入到学生表中，但可以插入到下一个行而不是第一页中最后输入信息所在的行

第一页中的代码shs / functions / add.stud.php

   <?php
session_start();
include 'database.php';
if (isset($_POST['add'])) {
    echo "welcome";
}
$message = "Provide all information needed please";

$lname = $_POST['Lname'];
$fname = $_POST['Fname'];
$mname = $_POST['Mname'];
$email = $_POST['email'];
$grade = $_POST['grade'];
$strand = $_POST['strand'];
$section = $_POST['section'];
$status = $_POST['status'];

if (empty($lname) || empty($mname)) {
    header("Location:../pages/user.add.php?empty=put something, will ya?");
    exit();
}

else {
    $sql = "INSERT INTO student (lname, fname, mname, gmail, grade, track, section, status)
    VALUES ('$lname', '$fname', '$mname','$email', '$grade', '$strand', '$section', '$status')";
    $result = mysqli_query($conn, $sql);

}

然后在帐户信息（用户名，密码）中

    <?php

  if (isset($_POST['users'])){
      include_once 'database.php';

      $uid = $_POST['uid'];
      $pass = $_POST['pass'];

      //pag check or pag handle sa mga errors sa pag log in
    if (empty($uid) || empty($pass))
    {
        header("location:../pages/user.add.php?signup=empty fields");
        exit();
    }  else {
        $sql = "SELECT * FROM 'user' WHERE username ='$uid'";
        $result = mysqli_query($conn, $sql);
        $resultCheck = mysqli_num_rows($result);

        if ($resultCheck < 0) {
            header("Location:.../user.add.php?the inputs are already taken");
            exit();
          }
          else {
              $hashedpass = password_hash($pass, PASSWORD_DEFAULT);
              //insert the new user to the user database
              $sql = "INSERT INTO user (userID, username, password) 
              VALUES (NULL, '$uid', '$hashedpass');";
              $result = mysqli_query($conn, $sql);
              //pag connect sa student database
                //katung sa database sa image
              $sql = "SELECT * FROM user WHERE username ='$uid'";
              $result = mysqli_query($conn, $sql);
                if (mysqli_num_rows($result) > 0){
                    while ($row = mysqli_fetch_assoc($result)){
                        $userid = $row['userID'];
                        $sql = "INSERT INTO profileimg (userID, status)
                        VALUES ('$userid', 1)";
                        if($result=mysqli_query($conn, $sql))
                        {
                            $last_id = mysqli_insert_id($conn);
                            $sql = "INSERT INTO student (userID) VALUES ('$last_id')";
                            $result = mysqli_query($conn, $sql);
                        }
                      else {
                        header("Location:.../user.add.php");
                        exit();
                      }
                        //pag add sa id sa user paingun sa student
                        header("Location:../pages/user.add.php");
                    }
                }

将输入内容放在第一页后，它将重定向到用户必须在其中输入帐户信息的另一页。这是所需的功能

Answer 1

最好的方法是将用户信息存储在student表中，然后使用mysqli_insert_id函数获取studentId 。 然后将帐户信息保存在user表中并获取userId 。 此后，使用userId update student表，其中studentId与您之前抓取的表相同。

$sql = "INSERT INTO student (lname, fname, mname, gmail, grade, track, section, status)
VALUES ('$lname', '$fname', '$mname','$email', '$grade', '$strand', '$section', '$status')";
$result = mysqli_query($conn, $sql);
$_SESSION['studentId'] = mysqli_insert_id($conn); //add this line to store the studentId into the session.

$sql = "INSERT INTO student (userID) VALUES ('$last_id')"; // change this line to the one below.

$sql = "UPDATE student SET userID = '$last_id' WHERE studentID = $_SESSION['studentId']";