Someone

<?php$config = array (   'user/register' => array (    array (      'field'   => 'username',      'label'   => 'Username',      'rules'   => 'trim|required|callback_username_check|xss_clean',    ),    array (      'field'   => 'email',      'label'   => 'Email',      'rules'   => 'trim|required|matches[email_confirm]|valid_email',    ),    array (      'field'   => 'email_confirm',      'label'   => 'Email Confirm',      'rules'   => 'trim|required|valid_email',    ),    array (      'field'   => 'password',      'label'   => 'Password',      'rules'   => 'required|matches[password_confirm]',    ),    array (      'field'   => 'password_confirm',      'label'   => 'Password Confirmation',      'rules'   => 'required',    ),    array (      'field'   => 'first_name',      'label'   => 'first_name',      'rules'   => '',    ),    array (      'field'   => 'last_name',      'label'   => 'last_name',      'rules'   => '',    ),    array (      'field'   => 'about_me',      'label'   => 'about_me',      'rules'   => 'trim',    ),    array (      'field'   => 'location',      'label'   => 'location',      'rules'   => '',    ),  ), // end user/register);