mod_rewrite隐藏.php扩展名并删除其他标题

I would like to hide php extension in url and in the responses of my Apache

I tried it with the following tipycal configuration:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}.php -f
RewriteRule ^(.*)$ $1.php [L,QSA]

DirectoryIndex index.php index.html

DocumentRoot /var/www/mysite
<Directory /var/www/mysite>
    Options -Indexes -MultiViews FollowSymLinks
    AllowOverride None
    Order allow,deny
    Allow from all
</Directory>
...

but I do not understand why Apache adds a set of headers that I think are unnecessary. for example about this url:

http://mysite/page

Edit: disabling Content Negotiation with -MultiViews cause:

# tailf /var/log/apache2/error.log
[Sun Jan 19 16:35:23 2014] [error] [client 127.0.0.1] Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.
[Sun Jan 19 16:35:23 2014] [debug] core.c(3063): [client 127.0.0.1] r->uri = /var/www/index.php
[Sun Jan 19 16:35:23 2014] [debug] core.c(3069): [client 127.0.0.1] redirected from r->uri = /var/www/index.php
...
[Sun Jan 19 16:35:23 2014] [debug] core.c(3069): [client 127.0.0.1] redirected from r->uri = /var/www/index.php
[Sun Jan 19 16:35:23 2014] [debug] core.c(3069): [client 127.0.0.1] redirected from r->uri = /page
[Sun Jan 19 16:35:23 2014] [debug] mod_deflate.c(615): [client 127.0.0.1] Zlib: Compressed 533 to 322 : URL /var/www/index.php


# tailf /var/log/apache2/rewrite.log 
127.0.0.1 - - [19/Jan/2014:18:42:06 +0100] [mysite/sid#7fa89ea62d58][rid#7fa89ed69340/initial] (1) pass through /page
127.0.0.1 - - [19/Jan/2014:18:42:06 +0100] [mysite/sid#7fa89ea62d58][rid#7fa89ed69340/initial] (1) [perdir /var/www/] internal redirect with /var/www/index.php [INTERNAL REDIRECT]
127.0.0.1 - - [19/Jan/2014:18:42:06 +0100] [mysite/sid#7fa89ea62d58][rid#7fa89ed75738/initial/redir#1] (1) pass through /var/www/index.php
127.0.0.1 - - [19/Jan/2014:18:42:06 +0100] [mysite/sid#7fa89ea62d58][rid#7fa89ed75738/initial/redir#1] (1) [perdir /var/www/] internal redirect with /var/www/index.php [INTERNAL REDIRECT]
127.0.0.1 - - [19/Jan/2014:18:42:06 +0100] [mysite/sid#7fa89ea62d58][rid#7fa89ed77ad0/initial/redir#2] (1) pass through /var/www/index.php
...

...
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^\.]+)$ $1.php [L,QSA]

DocumentRoot /var/www/mysite
<Directory /var/www/mysite>
Options -Indexes -MultiViews FollowSymLinks
...

Try this code (But both php and non-php tagged will work with it, unless you make it redirect them)

RewriteEngine On
RewruteRule ^(.*)$ /$1.php

For more information check this link - http://www.askapache.com/htaccess/modrewrite-tips-tricks.html

You think that this is mod_rewrite that takes care of the renaming, but it is actually mod_negotiation, more specifically the Multiviews Option, because apparently, mod_negotiation is executed earlier than mod_rewrite in the request lifecycle in Apache 2.0 and later.

What's happening is that when requesting http://mysite/page and a page file does not exists in the corresponding directory, mod_negotiation will try to locate files with the pattern page.*.
If a file named page.php is indeed present, mod_negotiation will then tell Apache to handle the current request as if http://mysite/page.php had been requested, and sets a few response headers, that are used mainly to help client-side caching:

Vary: negotiate

Content negotiation is being used for this request.

TCN: choice

This means the resource is transparently negotiated, choice means the 'best' variant has been returned, and the original name for the variant is present in the Content-Location header.

Content-Location: page.php

This is set in order for the browser to know that page.php is the best variant for page.

So the solution in your case is to disable content negotiation, either by ensuring that
Options -Multiviews
is present, or by making sure mod_negotiation is not loaded at all, so you can be certain that mod_rewrite will handle the renaming instead, without adding those headers.