PHP 标头位置重定向不起作用 - 为什么？
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PHP header location-redirect doesn't work - why?
提问by Industrial
Here's my file. I want to make it redirect, but nothing happens. To check out what is going on, I added an echo before the header part.
这是我的文件。我想让它重定向，但没有任何反应。为了检查发生了什么，我在标题部分之前添加了一个 echo。
It neither throws an error or redirect to index.php. What is wrong? I have turned output buffering on/off, but nothing makes it redirect. What can I do?
它既不会抛出错误也不会重定向到 index.php。怎么了？我已经打开/关闭输出缓冲，但没有任何东西使它重定向。我能做什么？
<?
error_reporting(E_ALL);
echo 'This is an error';
header("Location: login.php");
die();
?>
Thanks
谢谢
采纳答案by Industrial
I reminded myself that I had xDebug installed on the actual test environment and after googling it, I found this site: http://bugs.xdebug.org/view.php?id=532
我提醒自己，我在实际测试环境中安装了 xDebug，在谷歌搜索之后，我找到了这个站点：http://bugs.xdebug.org/view.php?id=532
So I'll downloaded the last version of xDebug and changed the php.ini accordingly for the new file and everything works out like a charm. Headers are being sent - the redirecetion is done and errors are displayed.
因此，我将下载 xDebug 的最新版本，并相应地为新文件更改了 php.ini，一切都变得很完美。正在发送标头 - 重定向已完成并显示错误。
Thanks everybody for your help!
感谢大家的帮助！
回答by Soufiane Hassou
From PHP documentation:
来自PHP 文档：
header()must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP.
header()必须在发送任何实际输出之前调用，无论是通过普通的 HTML 标签、文件中的空行还是来自 PHP。
And in your case, you are using echobefore header()
在您的情况下，您echo之前使用的是header()
回答by jah
Do you have short tags enabled?
try it with the long tag <?php:
您是否启用了短标签？用长标签试试<?php：
<?php
error_reporting(E_ALL);
header("Location: login.php");
die();
?>
回答by Your Common Sense
Is display_errors enabled?
@Gumbo - It sure is!
是否启用了 display_errors？
@Gumbo - 确实如此！
well, it sure is not. because
好吧，它肯定不是。因为
To check out what is going on, I added an echo before the header part.
为了检查发生了什么，我在标题部分之前添加了一个 echo。
if you'd have display_errors enabled, it would display an error, at least when you turned output buffering on.
如果您启用了 display_errors，它会显示一个错误，至少当您turned output buffering on.
So, first of all make sure you can see error messages.
just print out an undefined variable,
因此，首先确保您可以看到错误消息。
只需打印出一个未定义的变量，
error_reporting(E_ALL);
echo $undef9306;
I am sure you won't see it. So, you have to turn displaying errors on
我相信你不会看到的。所以，你必须打开显示错误
Next, on the server side you can use headers_sent()function to see if headers were sent. On client side use HTTP sniffer to see if anything were sent
接下来，在服务器端，您可以使用headers_sent()函数来查看是否发送了标头。在客户端使用 HTTP 嗅探器查看是否发送了任何内容
And check your file for the BOM.
并检查您的 BOM 文件。
