Question

我正在尝试为我正在处理的网站创建登录页面，我可以访问该服务器。

我可以加载一些100％工作的页面，但是当我向网站添加成员时，它会给我一条错误消息：

错误500

sharedweb.unisite.ac.uk页面无效。 sharedweb.unisite.ac.uk目前无法处理此请求。

我不知道为什么。导致此错误的脚本是：

<?php

  // include function files for this application
  require_once('bookmark_fns.php');

  //create short variable names
  $email=$_POST['email'];
  $username=$_POST['username'];
  $passwd=$_POST['passwd'];
  $passwd2=$_POST['passwd2'];
  // start session which may be needed later
  // start it now because it must go before headers
  session_start();
  try   {
    // check forms filled in
    if (!filled_out($_POST)) {
      throw new Exception('You have not filled the form out correctly. Please go back and try again.');
    }

    // email address not valid
    if (!valid_email($email)) {
      throw new Exception('That is not a valid email address.  Please go back and try again.');
    }

    // passwords not the same
    if ($passwd != $passwd2) {
      throw new Exception('The passwords you entered do not match. Please go back and try again.');
    }

    // check password length is ok
    // ok if username truncates, but passwords will get
    // munged if they are too long.
    if (!preg_match('/^(?=.*\d)(?=.*[A-Za-z])[0-9A-Za-z]{6,12}$/)', $passwd)) {
        throw new Exception('Your password must be between 6 and 12 characters inclusive. Please go back and try again.');
    }

    // attempt to register
    // this function can also throw an exception
    register($username, $email, $passwd);
    // register session variable
    $_SESSION['valid_user'] = $username;

    // provide link to members page
    do_html_header('Registration successful');
    echo "Welcome " $_POST["username"];
    echo 'Your registration was successful.  Go to the members page to start setting up your bookmarks!';
    do_html_url('member.php', 'Go to members page');

   // end page
   do_html_footer();
  }
  catch (Exception $e) {
     do_html_header('Warning:');
     echo $e->getMessage();
     do_html_footer();
     exit;
  }
?>

我该如何解决这个问题？

Answer 1

您的代码中存在2个语法错误：

首先，您需要使用.：

将字符串与变量连接起来

echo "Welcome " . $_POST["username"];

其次，这里有一个额外的结束括号：

if (!preg_match('/^(?=.*\d)(?=.*[A-Za-z])[0-9A-Za-z]{6,12}$/)', $passwd)) {
    throw new Exception('Your password must be between 6 and 12 characters inclusive. Please go back and try again.');
}

删除额外的括号：

if (!preg_match('/^(?=.*\d)(?=.*[A-Za-z])[0-9A-Za-z]{8,12}$/', $passwd)) {
    throw new Exception('Your password must be between 6 and 12 characters inclusive. Please go back and try again.');
}

至于这个错误：

不推荐使用：不推荐使用函数ereg（）

PHP手册：

ereg()在PHP 5.3.0中已弃用，并在PHP 7.0.0中被删除。

查看此帖子：Deprecated: Function ereg() is deprecated

提示：您应该通过将此代码添加到PHP文件的顶部来启用Error Reporting，这将有助于您查找错误。

<?php 
error_reporting(E_ALL);
ini_set('display_errors', 1);

PHP代码中出现500错误

1 个答案: