Magento: Detect if admin is logged in in frontend pages

Question

I have created a magento extension. I want to implement access to the extension. The extension creates a page in frontend and i want only admin to access that page. So basically

Answer 1

This code will works

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

//verify if the user is logged in to the backend
if(Mage::getSingleton('admin/session')->isLoggedIn()) {
  //do stuff
}
else
{
  echo "404 page not found";
}

OR

$adminsession = Mage::getSingleton('admin/session', array('name'=>'adminhtml'));

if($adminsession->isLoggedIn()) {
    //do stuff
} else {
    echo "404 page not found";
}

Did you try to dump the $_SESSION variable? Maybe it will help you get on the right track.