Question

我有一个注册页面，我最初只有一个查询转到名为'users'的db表。在'users'表中，我有一个名为'id'的列，它是主要的自动增量字段。

然后，我在原始文件下创建了一个新查询，该查询将发送到名为“付款状态”的数据库表。除了我尝试使用'users'表创建的'id'并将其放入'user_id'列的'payment_status'db表中之外，此查询中的所有内容都有效。它总是在其中输入0值。

if($validation->passed()) {
            $user = new User();

            $salt = Hash::salt(32);

            try {
                $user->create(array(
                    'firstname' => Input::get('firstname'),
                    'lastname' => Input::get('lastname'),
                    'email' => Input::get('email'),
                    'phone_number' => Input::get('phone_number'),
                    'username' => Input::get('username'),
                    'password' => Hash::make(Input::get('password'), $salt),
                    'salt' => $salt,
                    'joined' => date('Y-m-d H:i:s'),
                    'group' => 1
                ));
                $success = "You have successfully created an account. We will notify you once the account has been approved. Then you will be able to login.";
                echo $success;

            } catch(Exception $e) {
                die($e->getMessage());
            }
        } else {
            foreach($validation->errors() as $error) {
                $error;
            }
        }

我的第二个问题

if(isset($_POST['submit'])){
$id = ( isset( $_SESSION['id'] ) ? $_SESSION['id'] : "" );
$user_id = ( isset( $_SESSION['id'] ) ? $_SESSION['id'] : "" );
$firstname = Input::get('firstname');
$payment_name = "Owes";
$payment_id = 1;
$payment_amount = 0;

//Query to add user's name to owes db table

$con = mysqli_connect("localhost","root","","db");
/* check connection */
   if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
        exit();
    }
$stmt = $con->prepare("INSERT INTO payment_status (id, user_id, firstname, payment_name, payment_id, payment_amount) VALUES (?, ?, ?, ?, ?, ?)");

    if ( false===$stmt ) {
  // Check Errors for prepare
  die(' Owes DB prepare() failed: ' . htmlspecialchars($con->error));
}
$stmt->bind_param('iissii', $id, $user_id, $firstname, $payment_name, $payment_id, $payment_amount);
    if ( false===$stmt ) {
      // Check errors for binding parameters
      die('Owes DB bind_param() failed: ' . htmlspecialchars($stmt->error));
    }
$stmt->execute();

    if ( false===$stmt ) {
      die('execute() failed: ' . htmlspecialchars($stmt->error));
    }   
}

我正试图在我的第二份准备好的声明中使用这个变量。

$user_id = ( isset( $_SESSION['id'] ) ? $_SESSION['id'] : "" );

所以我想从'users'表中获取'id'并将其用于'payment_status'表中的'user_id'。

有人看到我做错了吗？

Answer 1

您正在使用MySQLi，因此您可以使用mysqli::$insert_id来获取插入数据库的最后一个ID。

<?php

    // Connect to MySQL database
    $con = mysqli_connect("localhost", "root", "", "db");

    // Insert into database
    $stmt = $con->prepare("INSERT INTO payment_status (id, user_id, firstname, payment_name, payment_id, payment_amount) VALUES (?, ?, ?, ?, ?, ?)");
    $stmt->bind_param('iissii', $id, $user_id, $firstname, $payment_name, $payment_id, $payment_amount);
    $stmt->execute();


    // Debug
    var_dump($con->insert_id);

    // Output:
    // int(1)

获取自动增量ID并在具有相同提交的其他查询中使用该ID

1 个答案: