Failed attempt at login script

<?php
include_once 'core.php';

if(isset($_SESSION['uname'])) {
    echo "You are logged in as ".$_USER['name']." <br />\n
    Click <a href='index.html'>here</a> to be taken to the main page.\n";
} else {
    echo "<table>\n
    \t<tr><td>Username:</td> <td><input type='text' name='uname' /></td></tr>\n
    \t<tr><td>Password:</td> <td><input type='password' name='pass' /></td></tr>\n
    \t<tr><td><input type='submit' name='login' value='Login' /></td>
    <td><a href='reg.php'><input type='button' name='register' value='Register' /></a></td></tr>\n
    /t</table>";
}
?>