【发布时间】：2017-12-26 03:01:37
【问题描述】：
我正在尝试与 XAMPP 和 sql server 建立简单的连接。但是当我尝试输入数据或连接到数据库时，我得到这个错误。错误是什么？我的项目非常需要它。我不知道为什么php第9行是错误的。
致命错误：未捕获错误：调用 C:\xampp\htdocs\last1\new\register.php:19 中未定义的方法 mysqli::error()
<?php
/* Registration process, inserts user info into the database
and sends account confirmation email message
*/
// Set session variables to be used on profile.php page
$_SESSION['email'] = $_POST['email'];
$_SESSION['first_name'] = $_POST['firstname'];
$_SESSION['last_name'] = $_POST['lastname'];
// Escape all $_POST variables to protect against SQL injections
$first_name = $mysqli->escape_string($_POST['firstname']);
$last_name = $mysqli->escape_string($_POST['lastname']);
$email = $mysqli->escape_string($_POST['email']);
$password = $mysqli->escape_string(password_hash($_POST['password'], PASSWORD_BCRYPT));
$hash = $mysqli->escape_string( md5( rand(0,1000) ) );
// Check if user with that email already exists
**$result = $mysqli->query("SELECT * FROM users WHERE email='$email'") or die($mysqli->error());**
// We know user email exists if the rows returned are more than 0
if ( $result->num_rows > 0 ) {
$_SESSION['message'] = 'User with this email already exists!';
header("location: error.php");
}
else { // Email doesn't already exist in a database, proceed...
// active is 0 by DEFAULT (no need to include it here)
$sql = "INSERT INTO users (first_name, last_name, email, password, hash) "
. "VALUES ('$first_name','$last_name','$email','$password', '$hash')";
// Add user to the database
if ( $mysqli->query($sql) ){
$_SESSION['active'] = 0; //0 until user activates their account with verify.php
$_SESSION['logged_in'] = true; // So we know the user has logged in
$_SESSION['message'] =
"Confirmation link has been sent to $email, please verify
your account by clicking on the link in the message!";
// Send registration confirmation link (verify.php)
$to = $email;
$subject = 'Account Verification ( clevertechie.com )';
$message_body = '
Hello '.$first_name.',
Thank you for signing up!
Please click this link to activate your account:
http://localhost/login-system/verify.php?email='.$email.'&hash='.$hash;
mail( $to, $subject, $message_body );
header("location: profile.php");
}
else {
$_SESSION['message'] = 'Registration failed!';
header("location: error.php");
}
}
请帮助我:(谢谢你们;*
【问题讨论】：
-
您是否建立了与数据库的连接？
-
$mysqli 在哪里声明？它是否在另一个文件中，如果是，是否包含在内？你的代码中的双星号是为了突出一行，还是只是在这个问题中突出显示一行？
-
我会把它发给你，你可以检查一下。你的邮箱是什么？
-
$mysqli 在 db.php 中声明。