取消设置会话然后返回其数据(unset a session then return its data)

我想获得一个会话，然后返回其数据然后取消设置（或获取一个会话，然后取消设置然后返回数据），我正在做2（头）重定向。在设置会话直到获得会话之后。

但问题是它没有返回任何东西。

以下是我正在使用的课程：

班级会议{

private $session_data1; public function __construct() { session_start(); // starts session on all files at first... } public function set_session($session_name, $session_data) { return ($_SESSION[$session_name] = $session_data) ? true : false; } public function get_session($session_name) { return isset($_SESSION[$session_name]) ? $_SESSION[$session_name] : false; } public function get_session_once($session_name) { $this->session_data1 = $this->get_session($session_name); $this->unset_session($session_name); return $this->session_data1; } public function unset_session($session_name) { if (isset($_SESSION[$session_name])) { unset($_SESSION[$session_name]); // return true; } } public function destroy_all_session() { session_destroy(); }

}

$ session = new Session（）;

我正在使用'set_session（）'来设置会话，并希望使用'get_session_once（）'来取消会话，然后返回该会话的值。

如果我不在方法'get_session_once（）'中取消它，那么它可以工作，如下所示：

public function get_session_once($session_name) { $this->session_data1 = $this->get_session($session_name); // $this->unset_session($session_name); return $this->session_data1; }

我是PHP新手，请帮忙

I want to get a session and then return its data then unset it (or get a session and then unset it then return the data), I am doing 2 (header) redirects. after setting the session till getting the session.

but the problem is its not returning anything.

following is the class I am using:

class Session {

private $session_data1; public function __construct() { session_start(); // starts session on all files at first... } public function set_session($session_name, $session_data) { return ($_SESSION[$session_name] = $session_data) ? true : false; } public function get_session($session_name) { return isset($_SESSION[$session_name]) ? $_SESSION[$session_name] : false; } public function get_session_once($session_name) { $this->session_data1 = $this->get_session($session_name); $this->unset_session($session_name); return $this->session_data1; } public function unset_session($session_name) { if (isset($_SESSION[$session_name])) { unset($_SESSION[$session_name]); // return true; } } public function destroy_all_session() { session_destroy(); }

}

$session = new Session();

I am using 'set_session()' to set a session and wanted to use 'get_session_once()' which will unset the session and then return the value of that session.

if I dont unset it in the method 'get_session_once()' then it works, like the following:

public function get_session_once($session_name) { $this->session_data1 = $this->get_session($session_name); // $this->unset_session($session_name); return $this->session_data1; }

I am new in PHP, please help

最满意答案

我对此进行了测试，对我来说这是有效的。

<? $session = new Session(); $session->set_session('Username', 'StackOverflow'); echo $session->get_session_once('Username'); // echos 'StackOverflow' echo $session->get_session_once('Username'); // no echo ?>

这仍然是一样的：

public function get_session_once($session_name) { $this->session_data1 = $this->get_session($session_name); $this->unset_session($session_name); return $this->session_data1; }

也许标题重定向是原因，它可能是清除/删除会话。

你把session_start（）放在每个页面的开头吗？

I tested this, and for me it's working.

<? $session = new Session(); $session->set_session('Username', 'StackOverflow'); echo $session->get_session_once('Username'); // echos 'StackOverflow' echo $session->get_session_once('Username'); // no echo ?>

This is still the same:

public function get_session_once($session_name) { $this->session_data1 = $this->get_session($session_name); $this->unset_session($session_name); return $this->session_data1; }

Maybe the header redirect is the cause, it might be clear/delete the session.

Did you put session_start() at the start of every page?

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