Magneto create admin user progrmatically

### Create New admin User programmatically. ####

require_once('./app/Mage.php');
umask(0);
Mage::app();

try {
 $user = Mage::getModel('admin/user')
           ->setData(array(
                'username' => '[user_name]',
                'firstname' => 'Admin',
                'lastname' => 'Admin',
                'email'  => '[user_email]',
                'password' => 'admin123',
                'is_active' => 1
               ))->save();

} catch (Exception $e) {
 echo $e->getMessage();
 exit;
}

//Assign Role Id
try {
       //Administrator role id is 1 ,Here you can assign other roles

     $user->setRoleIds(array(1))  
          ->setRoleUserId($user->getUserId())
          ->saveRelations();

} catch (Exception $e) {
    echo $e->getMessage();
    exit;
}

echo 'Admin user created successfully';