刷新页面会破坏 PHP 会话吗? [英] Does refreshing a page destroy PHP sessions?

问题描述

我有一个验证码命令，用于设置会话的值，然后在验证码不正确时刷新页面.

I've got a captcha command that sets the value of a Session and then refreshes the page if the captcha code isn't correct.

在页面的验证部分:

$_SESSION['refresh']=1;
echo '<META HTTP-EQUIV="Refresh" Content="0"; URL="contact-test.php">'; 

当页面加载时，它会运行一些 php 脚本，以查看是否为会话变量设置了值，如果有，则为警报框回显 javascript 函数，该函数通过在正文中调用onLoad 命令.

When the page loads it runs a bit of php script to see if there is a value set for a session variable, if there is it then echos a javascript function for an alert box, which called in the in the body via an onLoad command.

在代码的最开始:

session_start();

if (isset($_SESSION['refresh'])) {
    echo '<script type="text/javascript">
       function loadalert ()
       {alert("Incorrect security code, please try again.")}
    </script>';}

据我所知，当页面刷新会话值丢失时，我怀疑 session_start() 命令正在清除所有以前的会话.我尝试了一个测试回声，在循环之前和循环中发送一些文本和会话的值；只有循环之前的一个在刷新时没有会话值的情况下得到回显.

Near as I can tell when the page refreshes the sessions value is lost, I suspect the session_start() command is clearing all previous sessions. I've tried a test echo sending out some text and the value of the session, both before the loop and in the loop; only the one before the loop gets echoed without a session value at refresh.

推荐答案

否 只有在调用 session_destroy() 函数或设置到期日期时才会销毁会话.

No the session is only destroyed when you call the session_destroy() function or whenever the expiry date is set.

您还可以清空 SESSION 数组以销毁"SESSION 中的任何内容.

You can also empty the SESSION array to "destroy" whatever is inside the SESSION.

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