如何在点击< a>时设置会话变量链接 [英] How to set a session variable when clicking a <a> link

问题描述

我有以下问题...我想在点击以下常规链接​​时设置会话变量：

  < a href =homename =home>主页< / a> 
  

我的研究似乎指出，PHP无法赶上点击事件一个这样的方式，它会设置一个会话变量。

我相信这可以通过Ajax实现，但是如何实现？我的链接是什么样子？

设置session变量应该如下所示：

  $ _ SESSION [ 'link'] = home; 
  

简而言之：点击HTML中的链接时，必须设置会话变量。 >
我该怎么做？

PS：我对Ajax不太熟悉，但我会赶上。

编辑：链接将引用相同的页面，我也想避免像home.php？link = X的网址。

如果它不是'不可能以任何其他方式去做，太糟糕了。但我希望有一个解决方案。

重要提示：链接的名称将是 $ _ SESSION ['link']

解决方案

  session_start（）; 
 if（isset（$ _ SESSION ['current']））{
 $ _SESSION ['oldlink'] = $ _ SESSION ['current']; 
} else {
 $ _SESSION ['oldlink'] ='没有上一页'; 
} 
 $ _SESSION ['current'] = $ _ SERVER ['PHP_SELF']; 
  

也许这就是你要找的东西？
它会记住您来自的旧链接/页面（在您的网站内）。

将每一页放在每页顶部。

>

如果您想使其'刷新证明'，您可以添加另一个检查：

  if（isset（$ _ SESSION ['current']）&& $ _SESSION ['current']！= $ _ SERVER ['PHP_SELF']）
  

这会让网页不记得它自己。

更新：几乎相同as @Brandon虽然...
只需使用一个php变量，我知道这看起来像是一个安全风险，但是当它完成后，它不是。

 < a href =home.php？a = register>立即注册！< / a> 
  

PHP：

  if（isset（$ _ GET ['a']）/ *你可以在这里验证链接* /）{
 $ _SESSION ['link'] = $ _ GET ['a']; 
} 
  

为什么甚至将GET存储在会话中？只要使用它。
请告诉我为什么你不想使用GET。 «验证更安全。
我也许可以帮助您制作更好的脚本。

I have the following problem... I want to set a session variable when clicking on a normal link like:

<a href="home" name="home">home</a>

My research seems to point out that it is not possible for PHP to catch up with the click event in a such a way that it would set a session variable.

I believe it is possible with Ajax, but how? And what would my link look like?
Setting the session variable should look like:

$_SESSION['link'] = home;

So in short: When clicking on a link in HTML, a session variable must be set.
HOW am i going to do that?

PS: I'm not quite familiar with Ajax, but I'll catch up.

EDIT: The links will refer to the same page, also i want to avoid urls like "home.php?link=X".
If it isn't possible to do it any other way, too bad. But I'll hope there is a solution.
Important: the name of the link will be the value of $_SESSION['link']

解决方案

    session_start();
    if(isset($_SESSION['current'])){
         $_SESSION['oldlink']=$_SESSION['current'];
    }else{
         $_SESSION['oldlink']='no previous page';
    }
    $_SESSION['current']=$_SERVER['PHP_SELF'];

Maybe this is what you're looking for? It will remember the old link/page you're coming from (within your website).

Put that piece on top of each page.

If you want to make it 'refresh proof' you can add another check:

   if(isset($_SESSION['current']) && $_SESSION['current']!=$_SERVER['PHP_SELF'])

This will make the page not remember itself.

UPDATE: Almost the same as @Brandon though... Just use a php variable, I know this looks like a security risk, but when done correct it isn't.

 <a href="home.php?a=register">Register Now!</a>

PHP:

 if(isset($_GET['a']) /*you can validate the link here*/){
    $_SESSION['link']=$_GET['a'];
 }

Why even store the GET in a session? Just use it. Please tell me why you do not want to use GET. « Validate for more security. I maybe can help you with a better script.

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