i written a form which is visulaize to all people but
<p>when they click on submit button  checking wheather user logged in or not and then login form comes what is the way. I am new to php.</p>

<p>just like this website <a href="http://www.problemio.com/add_problem.php" rel="nofollow">http://www.problemio.com/add_problem.php</a></p>

<p>is it possible to know if the user logged or not without using sessions?</p>
