当URL传递变量时，php $ _g是空的
这是我的第一个堆栈溢出问题。 我有一个主页，您可以在其中登录，如果您登录它会将您发送到登录php，其中有一些代码检查登录是否不正确。如果是这种情况，则此代码将您重定向到主页：
标题（“位置：” .Server_Address。“ Home？error = Invalid_login”）;
现在您回到主页，但是url url未设置变量。它没有在 var_dump（parse_url（$ _ server ['http_referer']）））; or var_dump（$ _ get）;
这是我的index.php文件：
<?php
session_start();
require_once("config.php");
if(!(isset($_GET['page']))) { // redirect to main page
header("Location: ".SERVER_ADDRESS."home");
} else {
$mp = new MainPage($_GET['page']); // redirect to given page
}
?>
如果您尝试使用错误的凭据再次登录，并且执行相同的重定向过程，则现在将显示变量。 如果我要在几秒钟后刷新标头，也会发生同样的事情。
我似乎不明白为什么主页不会立即显示变量，我只想将变量用于IF语句，该语句会打印出额外的无效登录消息。
我正在使用wampserver64进行局部主机。
我的.htaccess看起来像这样：
Options FollowSymLinks
RewriteEngine On
RewriteRule ^([0-9a-zA-Z\-\#]+)/?$ index.php?page=$1 [L]
编辑： cbroe的答案对我有帮助，我的htaccess没有QSA标志
this is my first stack overflow question.
I have a home page, where you can login, if you login it sends you to a login php in which you have some code that checks if login is incorrect. If that is the case this code redirects you back to home page:
header("Location: ".SERVER_ADDRESS."home?error=invalid_login");
Now you are back on the home page but the url variable is not set. It does not show in avar_dump(parse_url($_SERVER['HTTP_REFERER'])); orvar_dump($_GET);
This is my index.php file:
<?php
session_start();
require_once("config.php");
if(!(isset($_GET['page']))) { // redirect to main page
header("Location: ".SERVER_ADDRESS."home");
} else {
$mp = new MainPage($_GET['page']); // redirect to given page
}
?>
If you go try login again with wrong credentials and do the same redirection process it will now show the variable.
Same thing happens if I were to refresh the header after few seconds.
I seem to not understand why the home page would not show the variable straight away, I just want to use the variable for an if statement that would print an extra invalid login message.
I am using wampserver64 for localhosting.
My .htaccess looks like this:
Options FollowSymLinks
RewriteEngine On
RewriteRule ^([0-9a-zA-Z\-\#]+)/?$ index.php?page=$1 [L]
EDIT:
CBroe's answer helped me, my htaccess did not have a QSA flag
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您的规则与
home匹配，并将请求重写为/index.php?page=home。您需要添加
QSA标志 - 查询字符串附加 - 以获得您在此处创建的新查询字符串，并将其与任何现有查询字符串合并。Your rule matches on
home, and rewrites the request to/index.php?page=home.You need to add the
QSAflag - query string append - to get the new query string you are creating there, merged with any existing one.