Mysql Php Update (Opgelost)

<?
   if (!isset($_POST["submit"]))
   {
      $id = $_GET["id"];
      $sql = "SELECT * FROM tvseries WHERE id=$id";
      $result = mysql_query($sql);        
      $myrow = mysql_fetch_array($result);
      ?>
      
      <form action="veranderserie.php" method="post">
	  <input type=hidden name="id" value="<?php echo $myrow["id"] ?>">
      Title:<INPUT TYPE="TEXT" NAME="naam" VALUE="<?php echo $myrow["naam"] ?>" SIZE=30><br>
	  Jaar:<INPUT TYPE="TEXT" NAME="jaar" VALUE="<?php echo $myrow["jaar"] ?>" SIZE=30><br>
      Informatie:<TEXTAREA NAME="info" id="elml" ROWS=10 COLS=30><? echo $myrow["info"] ?></TEXTAREA><br>
	   <input type="hidden" name="cmd" value="edit">
   
      <input type="submit" name="submit" value="submit">
   
      </form>
   
<? } ?>

<?
  if ($_POST["submit"]) {
      $naam = $_POST["naam"];
      $jaar = $_POST["jaar"];
      $info = $_POST["info"];
      
      $sql = "UPDATE tvseries SET naam='$naam',jaar='$jaar',info='$info' WHERE id=$id";
      $result = mysql_query($sql);
      echo "Serie is aangepast.";
    }
}
?>

<?
   if (!isset($_POST["submit"]))
   {
      $id = $_GET["id"];
      $sql = "SELECT * FROM tvseries WHERE id=$id";
      $result = mysql_query($sql);        
      $myrow = mysql_fetch_array($result);
      ?>
 
      <form action="veranderserie.php" method="post">
	  <input type=hidden name="id" value="<?php echo $myrow["id"] ?>">
      Title:<INPUT TYPE="TEXT" NAME="naam" VALUE="<?php echo $myrow["naam"] ?>" SIZE=30><br>
	  Jaar:<INPUT TYPE="TEXT" NAME="jaar" VALUE="<?php echo $myrow["jaar"] ?>" SIZE=30><br>
      Informatie:<TEXTAREA NAME="info" id="elml" ROWS=10 COLS=30><? echo $myrow["info"] ?></TEXTAREA><br>
	   <input type="hidden" name="cmd" value="edit">
 
      <input type="submit" name="submit" value="submit">
 
      </form>
 
<? } ?>
 
<?
  if ($_POST["submit"]) {
      $naam = $_POST["naam"];
      $jaar = $_POST["jaar"];
      $info = $_POST["info"];
 
      $sql = "UPDATE tvseries SET naam='$naam',jaar='$jaar',info='$info' WHERE id=$id";
      $result = mysql_query($sql);
      echo "Serie is aangepast.";
    }
}
?>

$sql = "UPDATE tvseries SET naam="'.$naam.'", jaar="'.$jaar.'", info="'.$info.'" WHERE id="'.$id.'"";

$sql = "UPDATE tvseries SET naam="'.$naam.'", jaar="'.$jaar.'", info="'.$info.'" WHERE id="'.$id.'"";