PHP $ _GET和$ _POST未定义的问题 [英] PHP $_GET and $_POST undefined problem
问题描述
我是PHP的新手，所以我很抱歉，如果这是一个简单的问题...
I'm new to PHP so I apologize if this is a simple problem...
我正在将PHP站点从一台服务器移到另一台服务器。新的服务器是IIS 7.0，PHP 5.2.1，短打开标签变成开，我不知道原始服务器是如何设置的（我只是给了代码）。
I am moving a PHP site from one server to another. The new server is IIS 7.0, PHP 5.2.1, with short open tag turned "On", and I don't know how the original server was set-up (I was just given the code).
以下是其中一页的第一部分代码：
The following is the very first section of code on one of the pages:
<?
ob_start();
session_start();
if($_GET['confirm'] == 13 || $_GET['confirm'] == 14 || $_GET['confirm'] == 15 || $_GET['confirm'] == 16)
{
include("test/query/test_query.php");
}
?>
执行此页面时，总是显示以下错误：
When this page executes, the following error is always shown:
PHP注意：未定义索引：在第6行的[文件位置] .php中确认
PHP Notice: Undefined index: confirm in [file location].php on line 6
另外，用户通过从主页（这是一个标准的HTML页面）重定向来访问此页面。正确导航到的完整网址如下所示：
Also, users access this page by being redirected from the home page (which is a standard HTML page). The full URL when properly navigated to is the following:
http://www.[site].com/test.php#login
...我明白为什么错误被抛出。我不明白的是这个代码如何在原始服务器上工作。我可以错过配置设置吗？
... I understand why the error is thrown. What I don't understand is how this code could ever work as it does on the original server. Could I be missing a configuration setting?
*同样的问题发生在整个网站的几十个位置。这只是该问题的一个特定事件。
*This same issue happens in dozens of locations all over the site. This is just one specific occurrence of the issue.
推荐答案
新服务器具有 error_reporting 设置为E_ALL。你看到的是一个通知，而不是一个错误。试试：
The new server has error_reporting set to E_ALL. What you're seeing is a notice, not an error. Try:
error_reporting(E_ALL ^ E_NOTICE)
将错误报告设置为E_ALL时，访问未设置数组的成员会生成错误。如果您不希望降低错误报告级别，请在检查$ _GET ['var']之前将您的代码更改为：
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)) {
在实际访问 $ _ GET ['confirm'] 之前调用isset（），您将验证您是否未访问未设置的数组成员。 （ $ _ GET ['confirm'] ）只会在URL以？confirm = ... 结尾或？something& confirm = ... ）
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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