This will work, checked in Firebug showing the text within a <p>.
Code:
echo '<p>Welcome back ' . $_SESSION['username'] . '!</p>';
Or, you can define the <p> to have a class, then just style it in your CSS file:
Code:
echo "<p class='message'>Welcome back ".$user."!</p>";
//then in your CSS file do this:
.message
{
//your styles
}
Regards,
LC.