<?PHP
include ("config.php"); 
$query = mysql_query("SELECT * FROM homepage where `id` = '1'"); 
$row = mysql_fetch_array($query);

if (isset($_POST['submit'])) {
$willkommen = $_POST['willkommen'];
						$dbanfrage= "UPDATE
								homepage
							SET
								willkommen = '$willkommen'
							WHERE
								id = '1'
						";
					if (mysql_db_query ($mysql_db, $dbanfrage, $mysql_ce)) {
						echo 'ok';
					} else {
						echo 'fehler';
					}
}
echo '
<form name="form1" method="post" action="update_text.php">
  <textarea name="willkommen" cols="50" rows="6">'.$row['willkommen'].'</textarea>
  <input type="submit" name="submit" value="Senden">
</form>
';
?>