Here is how to mirror the PHP site:

First, you need to have a rsync (http://rsync.samba.org/) installed.

Fetch the web files with the following:

   rsync -avzC --delete --delete-after rsync.php.net::phpweb /your/local/path 

If /your/local/path isn't in your web document tree (why isn't it?), 
then symlink the phpweb/ directory to the correct place on your server.

Now, make sure your web server is set up to serve up .php3 and .php
files as PHP parsed files.  If it isn't, add the mime-type to your config.

Rename the configuration.inc-dist file to configuration.inc and edit it
appropriately.  Set $failover_user_notes=true to enable a live query
to www.php.net to fetch user contributed manual notes.

Once you create a virtualhost which looks something like:

   <VirtualHost xx.php.net>
   ServerName     xx.php.net
   ServerAdmin    yourname@yourdomain.com
   DocumentRoot   /www/htdocs/phpweb
   php_value      include_path         .:/www/htdocs/phpweb/include
   php_flag       short_open_tag       on
   ErrorLog       logs/error_log
   TransferLog    logs/access_log
   DirectoryIndex index.php index.php3 index.html index.htm
   ErrorDocument  404   /error/
   ErrorDocument  401   /error/
   ErrorDocument  403   /error/
   </VirtualHost>

modified to reflect your local paths and country, of course, then your site
should start working.

Note: The official names for PHP mirrors are in the convention: "xx.php.net",
where "xx" is replaced by the 2-letter country code of your mirror's location.
If there already is a "xx.php.net", then you should set up your ServerName to
be "xx2.php.net" (or "xx3.php.net", etc.).  For a list of what's available and
what is taken, have a look at http://www.php.net/mirror_list.txt.

You must also set up a cron job that periodically does an rsync to refresh 
your web directory.  This will ensure that your web site is up to date. 
Something like:

   0,30 * * * * /usr/local/bin/rsync -avzC --delete rsync.php.net::phpweb /your/path

(You don't need to update every half-hour, although it shouldn't
hurt. You should try to stagger your times a bit from the example
to help spread the load on the rsync.php.net server.)

Once you have done the above and your site appears to work, send
a message to mirrors@php.net with the following information, and
appropriate steps will be taken to integrate your mirror site:

- Your name and email address as the admin for the mirror.
- Your country (we will update the DNS for php.net).
- A hostname that we can use as a CNAME for the country-code-based
  name of the mirror. (This is preferable to an IP address, because
  it means you can move the mirror to another IP address without
  coordinating with us at all.)
- Whether or not you've installed local searching support on your mirror.
  This uses ht://Dig (http://www.htdig.org), for which instructions for 
  setting it up can be found in Mirrors-htdig.tgz
- The name of your hosting company.
- The URL of the site that hosts the mirror.  This is where you want
  people will go when they click on the link for your mirror at the
  bottom of each page.
- The preferred default language for your country (currently only
  the manuals are translated). Don't worry if there's no content
  available in the preferred language yet, so long as English is
  an acceptable secondary default.

Don't worry about graphics for your country's flag - we've got them all!

You must also sign up to the mirrors mailing list, by sending an empty 
message to:

   php-mirrors-subscribe@lists.php.net

We need to be able to keep in touch with you!

And finally, don't forget to put a nice little PHP logo somewhere on your 
hosting company's site if possible.  Grab one of the logos from the 
"Downloads" page on the PHP site, and link it to your mirror.