在一个小型社交网络网站上向我的项目添加“编辑个人资料”页面需要帮助

Question

我有一个项目，所以建立了一个小型社交网络网站。注册表单可以使用用户名，但是当我为名字和姓氏添加区域时，它不起作用。 我不知道如何添加“编辑个人资料”页面，用户可以在其中添加个人资料照片和带有基本信息的简历。下面是我在尝试添加不起作用的名字和姓氏时使用的文件。

if (isset($_POST['reg_user'])) {


$username = mysqli_real_escape_string($db, $_POST['username']);
$firstname = mysqli_real_escape_string($db, $_POST['firstname']);
$lastname = mysqli_real_escape_string($db, $_POST['lastname']);
$email = mysqli_real_escape_string($db, $_POST['email']);
$password_1 = mysqli_real_escape_string($db, $_POST['password_1']);
$password_2 = mysqli_real_escape_string($db, $_POST['password_2']);


if (empty($username)) { array_push($errors, "Username is required"); }
if (empty($email)) { array_push($errors, "Email is required"); }
if (empty($password_1)) { array_push($errors, "Password is required"); }
if ($password_1 != $password_2) {
array_push($errors, "The two passwords do not match");
}


$user_check_query = "SELECT * FROM clients WHERE username='$username' OR 
email='$email' LIMIT 1";
$result = mysqli_query($db, $user_check_query);
$user = mysqli_fetch_assoc($result);

if ($user) { // if user exists
if ($user['username'] === $username) {
  array_push($errors, "Username already exists");
}

if ($user['email'] === $email) {
  array_push($errors, "email already exists");
}
}

if (count($errors) == 0) {
$password = md5($password_1);

$query = "INSERT INTO clients (username, firsname, lastname, email, 
password) 
          VALUES('$username', '$firstname', '$lastname' '$email', 
'$password')";

mysqli_query($db, $query);
$_SESSION['username'] = $username;
$_SESSION['success'] = "You are now logged in";
header('location: indexclient.php');
}
}

Answer 1

我仍然不能 100% 理解问题，但我确实在您的 INSERT 查询中发现了一个错误。你需要在'$lastname'之后添加一个分号

所以这个：

$query = "INSERT INTO clients (username, firsname, lastname, email, 
password) 
          VALUES('$username', '$firstname', '$lastname' '$email', 
'$password')";

需要：

$query = "INSERT INTO clients (username, firsname, lastname, email, 
password) 
          VALUES('$username', '$firstname', '$lastname', '$email', 
'$password')";

顺便说一句，您的查询打开了 SQL 注入，how to prevent SQL injection