root/trunk/register.php

<?php
require('./bb-load.php');

bb_ssl_redirect();

require_once( BB_PATH . BB_INC . 'registration-functions.php');

$profile_info_keys = get_profile_info_keys();

unset($profile_info_keys['first_name']);
unset($profile_info_keys['last_name']);
unset($profile_info_keys['display_name']);

$user_login = '';
$user_safe = true;

$bb_register_error = new WP_Error;

$_globals = array('profile_info_keys', 'user_safe', 'user_login', 'user_email', 'user_url', 'bad_input', 'bb_register_error');
$_globals = array_merge($_globals, array_keys($profile_info_keys));

if ( $_POST && 'post' == strtolower($_SERVER['REQUEST_METHOD']) ) {
    $_POST = stripslashes_deep( $_POST );
    $_POST['user_login'] = trim( $_POST['user_login'] );
    $user_login = sanitize_user( $_POST['user_login'], true );
    if ( $user_login !== $_POST['user_login'] ) {
        $bad_input = true;
        $bb_register_error->add( 'user_login', sprintf( __( "%s is an invalid username.  How's this one?" ), wp_specialchars( $_POST['user_login'] ) ) );
    }

    foreach ( $profile_info_keys as $key => $label ) {
        if ( is_string($$key) )
            $$key = attribute_escape( $$key );
        elseif ( is_null($$key) )
            $$key = attribute_escape( $_POST[$key] );

        if ( !$$key && $label[0] == 1 ) {
            $bad_input = true;
            $$key = false;
            $bb_register_error->add( $key, sprintf( __( '%s is required' ), $label[1] ) );
        }
    }

    if ( !$bad_input ) {
        $user_id = bb_new_user( $user_login, $_POST['user_email'], $_POST['user_url'] );
        if ( is_wp_error( $user_id ) ) { // error
            foreach ( $user_id->get_error_codes() as $code )
                $bb_register_error->add( $code, $user_id->get_error_message( $code ) );
            if ( $bb_register_error->get_error_message( 'user_login' ) )
                $user_safe = false;
        } elseif ( $user_id ) { // success
            foreach( $profile_info_keys as $key => $label )
                if ( strpos($key, 'user_') !== 0 && $$key !== '' )
                    bb_update_usermeta( $user_id, $key, $$key );
            do_action('register_user', $user_id);

            bb_load_template( 'register-success.php', $_globals );
            exit;    
        } // else failure
    }
}

if ( isset( $_GET['user'] ) )
    $user_login = sanitize_user( $_GET['user'], true ) ;
elseif ( isset( $_POST['user_login'] ) && !is_string($user_login) )
    $user_login = '';

bb_load_template( 'register.php', $_globals );

?>