materio-base-d7/materio_user.pages.inc

<?php 

function materio_user_register(){
  $return = array();

  // $return['block'] = '<h3>'. t('create your materiO\' account') . '</h3>';
  // $return['block'] .= drupal_render(drupal_get_form('user_register_form'));

  // $block = module_invoke('materio_user', 'block_view', 'user_register');
  // $return['block'] = render($block);  

  $block = block_load('materio_user','user_register');

  $return['block'] = drupal_render(_block_get_renderable_array(_block_render_blocks(array($block))));
 
  // dsm($block, '$block');
  drupal_json_output($return);
  // return 'hello';
}

function materio_user_register_submit(){
  $return = array();
  $return['POST'] = $_POST;

  $form_state = array( "values"=>$_POST);
  drupal_form_submit($_POST['form_id'], $form_state);

  $return['form_state'] = $form_state;

  $return['errors'] = form_get_errors();
  if($return['errors'])
    unset ($_SESSION['messages']['error']);

  // after registration user is automaticly logged in, thank's to login tobogan module
  
  drupal_json_output($return);
}

function materio_user_login_submit(){
  $return = array();
  $return['POST'] = $_POST;

  $form_state = array("values"=>$_POST);
  drupal_form_submit($_POST['form_id'], $form_state);
 
  $return['errors'] = form_get_errors();
  if($return['errors'])
    unset ($_SESSION['messages']['error']);

  // if user-login form succed we retreive the user uid on $form_state, then we can effectively loggin the user
  if($uid = $form_state['uid'])
    user_login_submit(array(), $form_state);

  drupal_json_output($return);
}