关于 html:php isset 中的非法偏移类型或为空

php Illegal offset type in isset or empty

我的这段代码最初可以运行，但在我重新启动计算机后无法运行。

我得到的错误是：

Warning: Illegal offset type in isset or empty in D://xampp//htdocs//cookieboylive//classes//Session.php on line 4

我的网站上有 3 个文件 – 索引、登录、注册。索引页面检查用户是否登录，但我认为这与问题无关。

这是当前代码：

主 register/login.php 页面

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require_once ‘core/init.php’;

if(Input::exists()) {
if(Token::check(Input::get(‘token’))) {

$validate = new Validate();
$validation = $validate->check($_POST, array(
‘username’ => array(‘required’ => true),
‘password’ => array(‘required’ => true)
));

if($validation->passed()) {
$user = new User();
$login = $user->login(Input::get(‘username’), Input::get(‘password’));

if($login) {
Redirect::to(‘index.php’);
} else {
echo ‘<p>Sorry, login failed.</p>’;
}
} else {
foreach($validation->errors() as $error) {
echo $error, ”;
}
}
}
}

if(Input::exists()) {
if(Token::check(Input::get(‘token’))) {
$validate = new Validate();
$validation = $validate->check($_POST, array(
‘username’ => array(
‘required’ => true,
‘min’ => 2,
‘max’ => 20,
‘unique’ => ‘users’
),
‘password’ => array(
‘required’ => true,
‘min’ => 6
),
‘password_again’ => array(
‘required’ => true,
‘matches’ => ‘password’
),
‘name’ => array(
‘required’ => true,
‘min’ => 2,
‘max’ => 50
)
));

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

$salt=Hash::salt(32);

try {

$user->create(array(
‘username’ => Input::get(‘username’),
‘password’ => Hash::make(Input::get(‘password’), $salt),
‘salt’ => $salt,
‘name’ => Input::get(‘name’),
‘joined’ => date(‘Y-m-d H:i:s’),
‘group’ => 1
));

Session::flash(‘home’, ‘Register SUCCESS’);
Redirect::to(‘index.php’);

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

}
}

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="styles/register_login_styles.css">
<link rel="stylesheet" type="text/css" href="styles/animate-custom.css">
</head>
<body>

<form action="" method="post">

Log in
<p>
<label for="username" class="uname" data-icon="u">Username </label>
<input id="username" name="username" required="required" type="text" placeholder="Username" autocomplete="off">
</p>
<p>
<label for="password" class="youpasswd" data-icon="p">Password </label>
<input id="password" name="password" required="required" type="password" placeholder="Password">
</p>
<p class="keeplogin">
<input type="checkbox" name="loginkeeping" id="loginkeeping" value="loginkeeping">
<label for="loginkeeping">Keep me logged in</label>
</p>
<input type="hidden" name="token" value="<?php echo Token::generate(); ?>">
<p class="login button">
<input type="submit" value="Login">
</p>
<p class="change_link">
Not a member yet ?
Join us
</p>
</form>

<form action="" method="post">
Sign up
<p>
<label for="username" class="uname" data-icon="u">Username</label>
<input id="username" value="<?php echo escape(Input::get(‘username’)); ?>" name="username" required="required" type="text" placeholder="Username" autocomplete="off">
</p>
<p><center>[wp_ad_camp_2]</center></p><p>
<label for="password" class="youpasswd" data-icon="p">Your password </label>
<input id="password" name="password" required="required" type="password" placeholder="Password">
</p>
<p>
<label for="password_again" class="youpasswd" data-icon="p">Please confirm your password </label>
<input id="password_again" name="password_again" required="required" type="password" placeholder="Password again">
</p>
<p>
<label for="name" class="youmail" data-icon="n">Name</label>
<input id="name" name="name" value="<?php echo escape(Input::get(‘name’)); ?>" required="required" type="text" placeholder="Name" autocomplete="off">
</p>
<input type="hidden" name="token" value="<?php echo Token::generate(); ?>">
<p class="signin button">
<input type="submit" value="Sign up">
</p>
<p class="change_link">
Already a member ?
Go and log in
</p>
</form>

</body>
</html>

会话.php

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<?php
class Session {
public static function exists($name) {
return (isset($_SESSION[$name])) ? true : false;
}

public static function put($name, $value) {
return $_SESSION[$name] = $value;
}

public static function get($name) {
return $_SESSION[$name];
}

public static function delete($name) {
if(self::exists($name)) {
unset($_SESSION[$name]);
}
}

public static function flash($name, $string = ”) {
if(self::exists($name)) {
$session = self::get($name);
self::delete($name);
return $session;
} else {
self::put($name, $string);
}
}
}

用户.php

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<?php
class User {
private $_db,
$_data,
$_sessionName,
$_isLoggedIn;

public function __construct($user = null) {
$this->_db = DB::getInstance();

$this->_sessionName = Config::get(‘session/session_name’);

if(!$user) {
if(Session::exists($this->_sessionName)) {
$user = Session::get($this->_sessionName);

if($this->find($user)) {
$this->_isLoggedIn = true;
} else {
// Pr0cess logout
}

} else {
$this->find($user);
}
}
}

public function create($fields = array()) {
if(!$this->_db->insert(‘users’, $fields)) {
throw new Exception(‘There was a problem creating an account.’);
}
}

public function find($user = null) {
if($user) {
$field = (is_numeric($user)) ? ‘id’ : ‘username’;
$data = $this->_db->get(‘users’, array($field, ‘=’, $user));

if($data->count()) {
$this->_data = $data->first();
return true;
}
}
return false;
}

public function login($username = null, $password = null) {
$user = $this->find($username);

if($user) {
if($this->data()->password === Hash::make($password, $this->data()->salt)) {
Session::put($this->_sessionName, $this->data()->id);
return true;
}
}

return false;
}

public function data() {
return $this->_data;
}

public function isLoggedIn() {
return $this->_isLoggedIn;
}
}

我尝试了上面建议的大多数解决方案。实际上，答案不在于拼写，而在于事实上，正如上面所指出的，exists 函数中的 $name 变量实际上是一个数组。

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public static function exists($name) {
return (isset($_SESSION[$name])) ? true : false;
}

简单的解决方法是将 [0] 附加到 [$name]，使其变为 [$name][0]，它返回与其关联的值以及您想要查看的值。为我工作。为什么它在视频中起作用，我不知道；可能是配置的东西。

I’m getting Fatal error: DEBUG: array …

表示$name是一个数组，显然是非法的字符串偏移。 $_SESSION[array()] 不起作用。确保将正确的值传递给 Session::exists().

我了解您正在处理的上下文，Skillfeed 的一个教程 PHP 登录/注册项目。事实上，我遇到了同样的错误，导致我在谷歌上搜索了同样的错误——我在你的这个 stackoverflow 线程上结束了。

我找不到很有帮助的答案，但我查看了我项目的课程，发现问题的根源在另一个课程中，而不是此处显示的 3 个课程。

在 Token.php 中：

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public static function check($token){
$tokenName = Config::get(‘sesson/token_name’);

if(Session::exists($tokenName) && $token === Session::get($tokenName)){
Session::delete($tokenName);
return true;
}

return false;
}

问题是一个简单的拼写错误，注意 get() 函数的字符串参数”sesson/token_name”，它应该是”session/token_name”。一旦我解决了这个问题，它就对我有用！

原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/268440.html

关于 html:php isset 中的非法偏移类型或为空

php Illegal offset type in isset or empty

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