Magento - How to find and check username logged in magento admin with username

- To get Admin users collection or all admin users details in magento,

$user_collect = Mage::getModel('admin/user')->getCollection();

- To get users admin role in magento,

$get_user_admin = Mage::getSingleton('admin/session')->getUser();
$get_user_admin ->getRole()->getData('role_id');

- How to find and check username logged in magento admin,

Mage::getSingleton('core/session', array('name'=>'adminhtml'));

if(  Mage::getSingleton('admin/session')->isLoggedIn() )

{

    $get_user_admin = Mage::getSingleton('admin/session')->getUser();

    echo $current_user_admin = $get_user_admin->getData('username');

} 

// It prints 'saurabh.bansal' if username of magento is 'saurabh.bansal'