Actually, it is possible. We just need the right php script calls. I did some investigation and for those who need this function into Balbooa's beautiful forms, you can modify the script below: (if you need to setup user activation by admin, its possible too, but the script below is for basic user insertion to joomla user db)
----
define( '_JEXEC', 1 );
define('JPATH_BASE', dirname(__FILE__) );//this is when we are in the root
define( 'DS', DIRECTORY_SEPARATOR );
require_once ( JPATH_BASE .DS.'includes'.DS.'defines.php' );
require_once ( JPATH_BASE .DS.'includes'.DS.'framework.php' );
$app = JFactory::getApplication('site');
$app->initialise();
/* you may want to change this*/
$params = array(
'name'=>'test',
'username'=>'test_user',
'email'=>'mail@example.com',
'password'=>'test',
);
$udata = array(
'name'=>$params['name'],
'username'=>$params['username'],
'password'=>$params['password'],
'email'=>$params['email'],
'groups'=>array(2), // set the usergroup(s) here (id)
);
$user = new JUser;
try{
echo '<pre>';
echo 'Bind user data: ';
var_dump($user->bind($udata));
echo 'Save user data: ';
var_dump($user->save());
echo 'Testing login: ';
var_dump( $app->login( array('username'=>$params['username'],'password'=>$params['password']) ) );
} catch (Exception $ex) {
echo 'Exception: ', $e->getMessage(), '\n';
}
