PHP使用URL变量重定向
[英]PHP redirect with URL variables
问题描述
I'm very new to php and trying to build a redirect which uses parameters from a URL which will differ from person to person. 
我对php很陌生，并尝试建立重定向，该重定向使用URL中的参数，该参数因人而异。
The URL a person will access looks like: www.website1.com/redirect.php?p= p123 &r= 4 &s= 567 人们将访问的URL如下所示：www.website1.com/redirect.php? p = p123 ＆r = 4 ＆s = 567
The p, r, and s will change for each person 每个人的p，r和s都会改变
I then want to redirect them to some other site that looks like this: 然后，我想将它们重定向到如下所示的其他站点：
www.website2.com/ p123 .aspx?r= 4 &s= 567 www.website2.com/ p123 .aspx？r = 4 ＆s = 567
Here is what I have so far, but it's giving me an error "Cannot modify header information - headers already sent by ..." 这是我到目前为止的内容，但这给我一个错误“无法修改标头信息-标头已经由...发送”
<html>
<?php
$fpvalue = $_GET['p'];
$frvalue = $_GET['r'];
$fsvalue = $_GET['s'];
header("Location: http://website2.com/".$fpvalue.".aspx?r=".$frvalue."&s=".$fsvalue);
?>
</html>
I would really appreciate the help for a beginner. 我真的很感谢初学者的帮助。
Thanks! 谢谢！
3 个解决方案
解决方案1
4 已采纳 2015-03-01 22:20:13
You can't do a redirection when you have been sent a "content" (text, html, space, wherever). 当您收到“内容”（文本，html，空格，任何地方）后，就无法进行重定向。 You should NOT do this before calling the header() function. 在调用header（）函数之前，请勿执行此操作。
As you can see, you have a "" before calling the header() function. 如您所见，在调用header（）函数之前，您有一个“”。
Change that: 更改：
<html>
<?php
$fpvalue = $_GET['p'];
$frvalue = $_GET['r'];
$fsvalue = $_GET['s'];
header("Location: http://website2.com/".$fpvalue.".aspx?r=".$frvalue."&s=".$fsvalue);
?>
</html>
For that: 为了那个原因：
<?php
$fpvalue = $_GET['p'];
$frvalue = $_GET['r'];
$fsvalue = $_GET['s'];
header("Location: http://website2.com/".$fpvalue.".aspx?r=".$frvalue."&s=".$fsvalue);
exit;
?>
<html>
</html>
And remember: Check if there is another previous space or "new line" before the "< ?php " tag. 并记住：检查“ <？php”标记之前是否还有另一个先前的空格或“换行”。
解决方案2
2 2015-03-01 22:26:19
The error "Cannot modify header information - headers already sent by ..." caused when you place session_start or php header below other codes, eg html then you should change into: 当您将session_start或php标头放置在其他代码（例如html）下面时，会引起错误“无法修改标头信息-标头已经由...发送”，则应更改为：
<?php
//your php codes
//....
?>
<!DOCTYPE html>
....etc.
This must work 这必须工作
解决方案3
0 2019-06-26 07:30:43
This instructions works for me to fix seo redirects, but you use for all 本说明对我有用，可以修复seo重定向，但是您可以使用所有
example url: http://yourdomain.com/index2.php?area=xpto 范例网址：http： //yourdomain.com/index2.php？area = xpto
example index2.php file: 示例index2.php文件：
<?php
$fpvalue = $_GET['area'];
if ($fpvalue == 'xpto') {
header("Location: http://newurl.com/", true, 301);
}
else if ($fpvalue == 'loren') {
header("Location: http://otherurl.com/", true, 301);
}
else if ($fpvalue == '') {
header("Location: http://otherurl.com/", true, 301);
}?>
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