Forked.

<?php
error_reporting(E_ALL ^ E_NOTICE);
if (isset($_POST['submit_button']))
{
    echo "<p>Welcome<strong> ".$_POST["user"]."</strong></p><br/><br/>";
    echo "<i>".$_POST["message"]."</i>";
}
?>

<form action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="POST">
<p>Name:</p>
<input type="text" name="user" placeholder="Name">
<br/><br/>
<p>Message</p>
<textarea name="message" rows="5" cols="45"></textarea>
<input type="submit" name="submit_button" value="SEND THIS THINGY"/>
</form>