blocks|key|46361|text|如果你不能控制脚本的开头，那么你唯一的方法就是使用JavaScript。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|46362|另外，正确的语法是header('Location:+profil.php?id='+.+$show['id']);|offset|length|style|CODE|46363|您需要Location:部件，以便浏览器知道它正在接收的报头。此外，不要忘记在重定向之后立即执行exit()或die()。|46364|entityMap^0|0|9|1D|0|3|9|1C|6|1J|5|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@$D|Q|E|R|F|G]|$D|S|E|T|F|G]|$D|U|E|V|F|G]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|K|$]]

If you can't control the very beginning of the script, where headers would be sent, then yes, your only method is to use JavaScript.

Also, the proper syntax is <code>header('Location: profil.php?id=' . $show['id']);</code>

You need the <code>Location:</code> part so the browser knows what header it's receiving. Also, don't forget to do an <code>exit()</code> or <code>die()</code> right after the redirect.

blocks|key|2535729|text|如果我错了，有人纠正我，但我认为你可以在你的页面开始使用ob_start()，这将允许你通过PHP重定向，即使标题已经发送。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2535730|entityMap^0|S|A|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Someone correct me if i'm wrong, but I think you can use <code>ob_start()</code> at the beginning of your page and that will allow you to redirect via PHP even if headers are already sent.

blocks|key|616527|text|您应该重新设计您的应用程序，使其更加合理。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|616528|它应该只在必要时才开始输出，而不是每次调用此文件时才开始输出。|616529|你必须修改你所有的代码，将每个脚本分成2个部分。第一部分将包含所有数据操作，第二部分将仅包含输出。将后者放入单独的文件中会更好，称为模板。因此，您的配置文件php将如下所示|616530|include+'dbc.php';
//some+code+that+sends+headers,+gets+data+etc
//after+it's+all+done,+call+your+template+files
include+'top.php';
include+'profiles.tpl.php';
include+'bottom.php';|code-block|syntax|javascript|616531|可能会有一些变化，但主要思想是相同的:将数据操作与数据表示分开。|616532|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|R|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

You should redesign your application, to make it more sensible. 
It should start output only when it necessary, not just every time this file is called. 

You have to modify all your code by dividing every script to 2 parts. First part will contain all data manipulations and second will contain output only. It will be better to put the latter one into separate file, called template. thus your profiles php will looks like

<pre><code>include 'dbc.php';
//some code that sends headers, gets data etc
//after it's all done, call your template files
include 'top.php';
include 'profiles.tpl.php';
include 'bottom.php';
</code></pre>

there can be some variations, but the main idea would be the same: separate your data manipulation from data presentation.

blocks|key|624290|text|我看到你有两个选择|type|unstyled|depth|inlineStyleRanges|entityRanges|data|624291|1)您尝试确保在执行代码之前不设置标头。在确定要发送给用户的内容之前就设置了标头，这表明您的代码有点混乱，或者您在某种程度上受到了限制。|624292|2)您可以使用javascript解决方案。然而，我会认为这是一种黑客行为，而不是一个合适的解决方案。试着找出为什么你不能使用方法1的答案。|624293|编辑:添加了代码示例|624294|您的代码应如下所示|624295|<?php

//+perform+logic+to+determine+if+you+need+to+do+the+redirect+or+not.
//+if+you+do+need+to+redirect,+set+the+following+
$iNeedToRedirect+=+true;
//+if+you+do+not+need+to+redirect,+set+the+following
$iNeedToRedirect+=+false;

if+($iNeedToRedirect)+{
+++header("Location:+profil.php?id="+.+$show["id"]");
+++die();
}

//+if+code+gets+here,+carry+on+as+normal
include("dbc.php");
include("top.php");

...+etc+etc+etc
?>|code-block|syntax|javascript|624296|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|U|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|V|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I see it that you have two options

1) You try to ensure that your headers are not set until after you have executed your code. Your headers being set before you have even determined what you are sending back to the user suggests your code is a little messy, or you are constrained in some way.

2) You can use your javascript solution. However, I would consider this as a hack, rather than an appropriate solution. Try to figure out the answer to why you can't use approach 1.

EDIT: A code example added

Your code should look something like this

<pre><code>&lt;?php

// perform logic to determine if you need to do the redirect or not.
// if you do need to redirect, set the following 
$iNeedToRedirect = true;
// if you do not need to redirect, set the following
$iNeedToRedirect = false;

if ($iNeedToRedirect) {
 header("Location: profil.php?id=" . $show["id"]");
 die();
}

// if code gets here, carry on as normal
include("dbc.php");
include("top.php");

... etc etc etc
?&gt;
</code></pre>

blocks|key|2528358|text|从header+documentation|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2528359|2528360|请记住，必须在发送任何实际输出之前调用header()，无论是通过普通的HTML标记、文件中的空行，还是从PHP.使用include()或require()、函数或其他文件访问函数读取代码，并且在调用header()之前输出空格或空行，这是一个非常常见的错误。使用单个PHP/HTML文件时也存在同样的问题。|blockquote|2528361|2528362|2528363|由于脚本的输出，标头将在您调用header()之前发送。您只需跟踪输出来自何处。|2528364|entityMap|0|LINK|mutability|MUTABLE|url|http://php.net/manual/en/function.header.php^0|1|6|1|K|0|0|0|0|0|0|F|8|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|F|3|-4|5|6|7|11|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|12|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|13|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|14|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|15|8|@$9|16|A|17|B|C]]|D|@]|E|$]]|$1|N|3|-4|5|6|7|18|8|@]|D|@]|E|$]]]|O|$P|$5|Q|R|S|E|$T|U]]]]

From the <a href="http://php.net/manual/en/function.header.php" rel="nofollow"><code>header</code> documentation</a>:

<blockquote>
 Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to read code with include(), or require(), functions, or another file access function, and have spaces or empty lines that are output before header() is called. The same problem exists when using a single PHP/HTML file.
</blockquote>

The headers are being sent before your call to <code>header()</code> due to output from the script. You just need to track down where the output is coming from.

<pre><code>header("profil.php?id=" . $show["id"]);
</code></pre>

What i tried to do, but headers are already sent at top, so how can I redirect the user? Should I use window.location.replace("URL"); (javascript) instead?

PHP: Redirect ( header)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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header("profil.php?id=" . $show["id"]);我想做什么，但是头部已经在顶部发送了，那么我如何重定向用户呢？我应该使用window.location.replace("URL")；(javascript)吗？

问PHP: Redirect ( header)
EN

回答 5

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