PHP $_GET 和 $_POST 未定义问题

PHP $_GET and $_POST undefined problem(PHP $_GET 和 $_POST 未定义问题)

问题描述

我是 PHP 新手，如果这是一个简单的问题，我深表歉意...

I'm new to PHP so I apologize if this is a simple problem...

我正在将一个 PHP 站点从一台服务器移动到另一台服务器.新服务器是IIS 7.0，PHP 5.2.1，短标签打开开"，不知道原来的服务器是怎么设置的(刚刚给了代码).

I am moving a PHP site from one server to another. The new server is IIS 7.0, PHP 5.2.1, with short open tag turned "On", and I don't know how the original server was set-up (I was just given the code).

以下是其中一个页面上的第一段代码:

The following is the very first section of code on one of the pages:

<?
ob_start();
session_start();

if($_GET['confirm'] == 13 || $_GET['confirm'] == 14 || $_GET['confirm'] == 15 || $_GET['confirm'] == 16) 
{
    include("test/query/test_query.php");
}
?>

这个页面执行的时候，总是显示如下错误:

When this page executes, the following error is always shown:

PHP 注意:未定义索引:在第 6 行的 [文件位置].php 中确认

PHP Notice: Undefined index: confirm in [file location].php on line 6

此外，用户通过从主页(这是一个标准的 HTML 页面)重定向来访问此页面.正确导航到的完整 URL 如下:

Also, users access this page by being redirected from the home page (which is a standard HTML page). The full URL when properly navigated to is the following:

http://www.[site].com/test.php#login

...我明白为什么会抛出错误.我不明白的是这段代码如何像在原始服务器上那样工作.我可能缺少配置设置吗?

... I understand why the error is thrown. What I don't understand is how this code could ever work as it does on the original server. Could I be missing a configuration setting?

*同样的问题发生在整个站点的数十个位置.这只是该问题的一个特定事件.

*This same issue happens in dozens of locations all over the site. This is just one specific occurrence of the issue.

推荐答案

新服务器有 error_reporting 设置为 E_ALL.您看到的是通知，而不是错误.试试:

The new server has error_reporting set to E_ALL. What you're seeing is a notice, not an error. Try:

error_reporting(E_ALL ^ E_NOTICE)

错误报告设置为 E_ALL 时，访问未设置的数组成员会产生错误.如果您不想降低错误报告级别，请在检查 $_GET['var'] 之前，将代码更改为:

With error reporting set to E_ALL, accessing a member of an array which is not set generates an error. If you don't wish to lower your error reporting level, before checking $_GET['var'], change your code to:

if(isset($_GET['confirm']) && ($_GET['confirm'] == 13 || $_GET['confirm'] == 14 || $_GET['confirm'] == 15 || $_GET['confirm'] == 16)) {

通过在实际访问 $_GET['confirm'] 之前添加对 isset() 的调用，您将验证您没有访问未设置的数组成员.($_GET['confirm'] 只会在 URL 以 ?confirm=... 或 ?something...&confirm= 结尾时设置...)

by adding the call to isset() before you actually access $_GET['confirm'], you will verify that you're not accessing an array member which is not set. ($_GET['confirm'] will only be set if the URL ends in ?confirm=... or ?something...&confirm=...)

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