PHP未设置会话变量 [英] PHP Unset Session Variable

问题描述

我是一个菜鸟程序员，所以我对任何明显的错误事先表示歉意.过去一周，我花了很多时间来创建产品数据库.我也可以使用表单添加产品，查看所有添加的产品等.我正在使用通过表单输入数据创建的会话.我正在努力包括使删除产品页面正常工作，我尝试使用unset清除变量，但无法使其正常工作.

I'm a noob programmer so I apologies in advance for any obvious mistakes. I've spent the past week creating a product database kinda thing. I've got too the point where I can add products using a form, view all products added etc. I've being using sessions which are created via the form input data. I'm struggling to include get a delete product page working, I've tried using unset to clear the variable but can't get it too work.

设置会话变量的"ADD产品"页面:

ADD Product page which sets the session variable:

$_SESSION['Products'][] = $_POST; //is how i set the session on the add products page. 

unset $_SESSION['Products'][]; //is how i have tried to clear the session although it does not work.

任何朝着正确方向的观点将不胜感激！

Any point in the right direction will be appreciated!

推荐答案

您可以使用以下方法取消设置会话变量:

You can unset session variable using:

1. session_unset -释放所有会话变量(等于使用:$_SESSION = array();)
2. unset($_SESSION['Products']);-仅取消会话变量中的产品"索引. (记住:您必须像使用函数一样使用，而不是像以前那样使用)
3. session_destroy —销毁注册到会话的所有数据

1. session_unset - Frees all session variables (It is equal to using: $_SESSION = array();)
2. unset($_SESSION['Products']); - Unset only Products index in session variable. (Remember: You have to use like a function, not as you used)
3. session_destroy — Destroys all data registered to a session

要了解使用session_unset和session_destroy的区别，请阅读此 SO答案.那有帮助.

To know the difference between using session_unset and session_destroy, read this SO answer. That helps.

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