我正在尝试用 PHP 制作注册/登录表单,但无法注销。我不断收到以下错误。
致命错误:未捕获的 ArgumentCountError:函数 USER::__construct() 的参数太少,第 4 行在 C:\xampp\htdocs\recepten\logout.php 中传递了 0,而 C:\xampp\htdocs\recepten\ 中预期为 1 class.user.php:6 堆栈跟踪: #0 C:\xampp\htdocs\recepten\logout.php(4): USER->__construct() #1 {main} 抛出在 C:\xampp\htdocs\recepten\第 6 行的 class.user.php
有人可以告诉我我在做什么以及如何解决问题吗?
这是我的注销脚本代码行:
<?php
session_start();
require_once 'class.user.php';
$user = new USER();
if(!$user->is_logged_in())
{
$user->redirect('indexlogin.php');
}
if($user->is_logged_in()!="")
{
$user->logout();
$user->redirect('indexlogin.php');
}
?>
这是我的呼叫用户脚本代码:
<?php
class USER
{
private $db;
function __construct($DB_con)
{
$this->db = $DB_con;
}
public function register($fname,$lname,$uname,$umail,$upass)
{
try
{
$new_password = password_hash($upass, PASSWORD_DEFAULT);
$stmt = $this->db->prepare("INSERT INTO users(user_name,user_email,user_pass)
VALUES(:uname, :umail, :upass)");
$stmt->bindparam(":uname", $uname);
$stmt->bindparam(":umail", $umail);
$stmt->bindparam(":upass", $new_password);
$stmt->execute();
return $stmt;
}
catch(PDOException $e)
{
echo $e->getMessage();
}
}
public function login($uname,$umail,$upass)
{
try
{
$stmt = $this->db->prepare("SELECT * FROM users WHERE user_name=:uname OR user_email=:umail LIMIT 1");
$stmt->execute(array(':uname'=>$uname, ':umail'=>$umail));
$userRow=$stmt->fetch(PDO::FETCH_ASSOC);
if($stmt->rowCount() > 0)
{
if(password_verify($upass, $userRow['user_pass']))
{
$_SESSION['user_session'] = $userRow['user_id'];
return true;
}
else
{
return false;
}
}
}
catch(PDOException $e)
{
echo $e->getMessage();
}
}
public function is_loggedin()
{
if(isset($_SESSION['user_session']))
{
return true;
}
}
public function redirect($url)
{
header("Location: $url");
}
public function logout()
{
session_destroy();
$_SESSION['user_session'] = true;
}
}
?>
如果有人能帮忙那就太好了!