PHP试图找出一种方法来刷新会话在浏览器刷新 - PHP Trying To Figure out A way to Refresh Session on Browser Refresh

PHP Trying To Figure out A way to Refresh Session on Browser Refresh

你好，我确实发现自己在一个任务挑战，目前基本上我已经能够完全实现的挑战，但有一件事，我应该能够改变$_SESSION超全局在浏览刷新我看所有类型的可能的替代方案，但似乎没有工作，任何帮助都很感激，这是我的代码，我寻找的是$_SESSION在浏览器刷新时改变的一种方式，每个工作版本似乎是可能的，我不知道还有哪种方法可以尝试，我曾尝试过会话取消设置或销毁，但它删除了整个表单:

<?php
session_start();
if(!isset($_SESSION['secret'])) {
  $possible_chars = array_merge(range('A','Z'),range('0','9'));
  shuffle($possible_chars);
  $string = substr(implode($possible_chars),0,5);
  $_SESSION['secret'] = $string;
}
else {
?>
  <!DOCTYPE html>
  <html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>THIS FORM POST TO ITSELF TO BE SURE THE USER ENTERS THE RIGHT INFO</title>
    <IMG SRC="index.php" alt="captcha"/>
  </head>
  <body>
    <h1>Captcha Form</h1> 
    <form method="post" action="index.php">
      <fieldset>
        <ul>
          <li>
            <label for="email">Email</label>
            <br>
            <input name="email" id="email" value="<?php if(isset($_POST['email'])) echo $_POST['email']; ?>" />
          </li>
          <li>
            <label for="comments">Comments</label>
            <br>
            <input name="comments" id="comments"  value = "<?php if(isset($_POST['comments'])) echo $_POST['comments']; ?>" />
          </li>
          <li>
            <label for="captcha">Please input CAPTCHA:</label>
            <br>
            <input name="captcha" id="captcha"/>
          </li>
          <li>
            <input type="submit" name="submit" value="Submit My Captcha!"/>
          </li>
        </ul>
        <?php print_r($_SESSION['secret']); ?>
        <br'>
        <br'>
        <?php
        $answer = (isset($_POST['captcha']) ? $_POST['captcha'] : null);
        $email = (isset($_POST['email']) ? $_POST['email']: null);
        $comments = (isset($_POST['comments']) ? $_POST['comments']: null);
        if( !empty( $_POST )) {
          if (strcasecmp($answer,$_SESSION['secret']) != 0) {
            //($_SESSION['secret'] != $answer )
            echo "Fee Fi Fo Fum Fot I smell the blood of an automated bot!";
            //$_SESSION['secret'] = NULL;
            header('captcha_challenge.php');
            //$_SESSION['secret'] = NULL;
          }
          elseif (strcasecmp($answer,$_SESSION['secret']) == 0) {
            //($_SESSION['secret'] == $answer)
            unset ($_SESSION['secret']);
            $_SESSION['email'] = $_POST['email'];
            $_SESSION['comments'] = $_POST['comments'];
            $query = ("INSERT INTO comments (email, content) VALUES ( '$email', '$comments')");
            $results = $db->query($query);
            header('Location:goodMessage.php');
          }
        }
}
?>

这是我使用的会话超时。

初始创建会话时:

session_start();
$_SESSION['LAST_ACTIVITY'] = time();

在其他页面中调用的函数，当导航到新页面时更新会话超时

function check_timeout($timeout, &$SESSION)
    {
        if (isset($_SESSION['LAST_ACTIVITY']))
        {        
            if((time() - $_SESSION['LAST_ACTIVITY']) > $timeout)
            {
                end_session($SESSION);
            }
            $_SESSION['LAST_ACTIVITY'] = time();
        }
        else 
        {
            end_session($SESSION);
        }
    }

我有一个单独的函数(end_session())来结束会话。的,参数中允许函数更新会话。

在每一页上，我调用:

session_start();
check_timeout($timeout, $SESSION);