Cloudflare & phpBB3

Session handling in phpBB3 requires a user to use one IP address per session, therefore if your IP address changed, you will be prompt to login again.

Cloudflare is a web caching service that cache static contents of a website by acting as the nameserver that manage the website domain name. Therefore, every request to the domain name will pass through Cloudflare system first and any cached contents will be served from Cloudflare servers instead of the web hosting server.

However, when using Cloudflare service, the REMOTE_ADDR value for PHP $_SERVER will follow Cloudflare servers IP address. Therefore, you might face problem when using phpBB (or any other web app that rely on session tied to the IP address) with this service.

So, we need to edit phpBB session.php file to grab the correct variable for the users’ real IP address. Edit includes/session.php


$this->ip = (!empty($_SERVER['REMOTE_ADDR'])) ? (string) $_SERVER['REMOTE_ADDR'] : '';

Replace with:

$this->ip = (!empty($_SERVER['HTTP_CF_CONNECTING_IP']))
          ? (string) $_SERVER['HTTP_CF_CONNECTING_IP']
          : ((!empty($_SERVER['REMOTE_ADDR'])) ? (string) $_SERVER['REMOTE_ADDR'] : '');

HTTP_CF_CONNECTING_IP is special header value passed by Cloudflare servers containing visitors’ real IP address, and in case this variable not set, we use the good ol REMOTE_ADDR

phpBB SEO Ultimate URL backslash in URL

In case someone stumbled upon this problem:

1. You download and install the new release of phpBB (3.0.9) and immediately integrate SEO Ultimate URL package
2. The setup went well except you found out that the page is looked ugly because the CSS wasn’t loaded – cause by the URL got backslash in it:

http://localhost//style.php …

To fix, you need to edit the data in the config table:
1. Access the phpBB3 config table (phpbb_config)
2. Lookup for config_name = ‘script_path’
3. You’ll see the value is ‘/’. Change this to ‘/’
4. Save the data

Clear the cache, and reload the page. You should see the pretty page back again!

Additional: I’m using localhost with custom port number (82) as testing platform. So in case you’re not getting the image out on the page (caused by the URL generated become http://localhost/style… instead of http://localhost:82/style…, so you need to edit the force server URL settings

1. Go to admin control panel, General > Server Settings
2. Set ‘Force Server URL’ to ‘Yes’