因此,我最近为我的所有用户创建了一个登录脚本和部分,显然允许他们登录到网站上的安全部分来查看某些内容。一旦我检查了所有变量是否正确,并且用户输入了正确的详细信息,我就设置了两个会话。一个会话保存用户id,另一个会话保存用户登录的时间。
然后该页面将重定向到一个名为home.php的页面,以便用户在登录后拥有自己的小主页。不过,重定向终于起作用了,但是作为另一个页面上的测试,我所做的只是启动会话,然后回显这两个会话。
每次它们都是空的,这意味着会话不会从一个页面转移到另一个页面。我不知道为什么,我只是不知道出了什么问题。所以我的问题是,有人能看出我哪里出错了吗。我检查,以确保我使用的是正确的版本和我的主机支持它,这一切回来积极,所以我不知道…请帮助!:)
<?php
//Session
session_start();
require 'conn.php';
//If the POST var "login" exists (our submit button), then we can
//assume that the user has submitted the login form.
if(isset($_POST['login'])) {
//Retrieve the field values from our login form.
$username = !empty($_POST['username']) ? trim($_POST['username']) : null;
$passwordAttempt = !empty($_POST['password']) ? trim($_POST['password']) : null;
//Retrieve the user account information for the given username.
$sql = "SELECT id, username, password FROM users WHERE username = :username";
$stmt = $pdo->prepare($sql);
//Bind value.
$stmt->bindValue(':username', $username);
//Execute.
$stmt->execute();
//Fetch row.
$user = $stmt->fetch(PDO::FETCH_ASSOC);
//If $row is FALSE.
if($user === false){
//Could not find a user with that username!
//PS: You might want to handle this error in a more user-friendly manner!
die('Incorrect username / password combination!');
} else {
//User account found. Check to see if the given password matches the
//password hash that we stored in our users table.
//Compare the passwords.
$validPassword = password_verify($passwordAttempt, $user['password']);
//If $validPassword is TRUE, the login has been successful.
if($validPassword){
//Provide the user with a login session.
$_SESSION["user_id"] = $user['id'];
$_SESSION["logged_in"] = time();
echo " Display Errors: ".ini_set('display_errors', 1);
echo " Display Startup Errors: ".ini_set('display_startup_errors', 1);
echo " Error Reporting: ".error_reporting(E_ALL);
//echo "<script type='text/javascript'>window.top.location='home.php';</script>";
//exit;
//Redirect to our protected page, which we called home.php
?>
<!--<script type="text/javascript">
alert("Login successful!");
window.location.href = "home.php";
</script>-->
<?php
exit;
} else{
//$validPassword was FALSE. Passwords do not match.
die('Incorrect username / password combination!');
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<!-- Basic Page Needs
–––––––––––––––––––––––––––––––––––––––––––––––––– -->
<meta charset="utf8">
<title>Login</title>
<meta name="description" content="Service Department User Registration Details">
<meta name="author" content="Ben Smith">
<!-- Mobile Specific Metas
–––––––––––––––––––––––––––––––––––––––––––––––––– -->
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- FONT
–––––––––––––––––––––––––––––––––––––––––––––––––– -->
<link href="//fonts.googleapis.com/css?family=Raleway:400,300,600" rel="stylesheet" type="text/css">
<!-- CSS
–––––––––––––––––––––––––––––––––––––––––––––––––– -->
<link rel="stylesheet" href="../css/normalize.css">
<link rel="stylesheet" href="../css/skeleton.css">
<!-- Favicon
–––––––––––––––––––––––––––––––––––––––––––––––––– -->
<link rel="icon" type="image/png" href="../images/favicon.png">
</head>
<body>
<div class="container">
<div class="row">
<h1>Login</h1>
<form method="post" action="login.php">
<div class="row">
<div class="six columns">
<label for="username">Username</label>
<input class="u-full-width" type="text" name="username" id="username">
</div>
<div class="six columns">
<label for="password">Password</label>
<input class="u-full-width" type="password" id="password" name="password">
</div>
</div>
<input class="button-primary" type="submit" name="login" value="Login"></button>
</form>
</div>
</div>
</body>
原来我有
//Provide the user with a login session.
$_SESSION['user_id'] = $user['id'];
$_SESSION['logged_in'] = time();
//Redirect to our protected page, which we called home.php
header('Location: home.php');
exit;
一旦到达脚本的那一部分,页面就会重新加载。因此,它将刷新login.php而不是home.php,然后屏幕将是空白的(显然,因为没有任何内容被打印到屏幕上)
当我将以下代码放入时报告错误
ini_set('display_errors', 1); ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
结果什么也得不到
2条答案
按热度按时间xu3bshqb1#
拆下第一个
exit;
,这将停止进一步执行。旁注:我把它作为社区wiki发布,因为它是在评论中解析的。
5f0d552i2#
这是重定向的典型问题。
您需要在重定向之前关闭会话,以便保存会话。
更新:php在脚本末尾自动保存会话。但如果脚本以
exit
或者die
(这在重定向中很常见)。另请参见以下答案:https://stackoverflow.com/a/14870204/358813更新2:另请参见:http://php.net/manual/en/function.session-write-close.php#63970
我不确定最新的php版本是否仍然不能在突然退出时保存会话。