phpBB API – Auto Login a User Without a Password

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In my previous post, phpBB API – Logging In And Logging Out a User, I showed how to login a user to phpBB forum using their username and password.
However in some cases, you may want to login a user without having or knowing their password.
phpBB API provides a method to auto login users by just knowing their phpBB ID.
This can be useful if you have a website connected to phpBB forum and you’re only storing the usernames or IDs in that database. Or if you are implementing a Facebook Login Button on your website and you want to synchronize the session with your phpBB forum.


define(‘IN_PHPBB’, true);//Must be defined
$phpbb_root_path = ‘../phpBB3/’;//your forum directory location
$phpEx = substr(strrchr(__FILE__, ‘.’), 1);
require_once($phpbb_root_path . ‘common.’ . $phpEx);

function phpbbAutoLogin($id)
global $phpbb_root_path, $phpEx, $user;

$user->session_kill(false);//Logout the User – For testing
$user->session_begin(); //Start Session
$user->session_create($id); //Create Session

//Check if User has successfully Logged in
if($user->data[‘is_registered’]==1 && $user->data[‘user_type’] != USER_INACTIVE && $user->data[‘user_type’] != USER_IGNORE)
echo  $user->data[‘username’] . ‘ has logged in’;
echo ‘Error Logging In’;

//Auto Login User with phpBB User ID 52

Questions? Please let me know!

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