chyba u multiple update v MYSQL

<?php
$submit = isset($_POST['submit']);
$result1 = false;

if($Submit){
for($i=0;$i<$count;$i++){ 
$sql1="UPDATE $tble SET castka='$castka[$i]', datum='$datum[$i]' WHERE user_id='$user_id[$i]'";
$result1=mysql_query($sql1);
}
}

if($result1){
header("location:vyplaty.php");
}
?>

<?php

        require("nastaveni.php");
    $pripoj=MySQL_Connect($SQL_Server, $SQL_Uzivatel, $SQL_Heslo) or Die(MySQL_Error());
    MySQL_Select_Db($Databaze) or Die(MySQL_Error());
    mysql_query("SET CHARACTER SET utf8");

    $articleid = $_GET["articleid"];
      $result = mysql_query("SELECT * FROM tbl_images WHERE articleid = '$articleid' ORDER BY `id` ASC");
    $count = mysql_num_rows($result); 
      
  ?>
  <form name="form1" method="post" action="">  
   <table>
      <?php while($rows=mysql_fetch_array($result)){ ?>  
        <tr>
          <td width="5%"><strong><?php $id[]=$rows['id']; ?><? echo $rows['id']; ?></strong>
          </td>
          <td width="20%"><img src="../uploads/<?php echo $rows['tripid']; ?>/<?php echo $rows['articleid']; ?>/thumb/<?php echo $rows['image_name']; ?>" />
          </td>
          <td width="25%">
            <input name="title[]" type="text" id="title" value="<? echo $rows['title']; ?>">
          </td>          
        </tr>  
    <?php
    }
    ?>
    </table>
    <input type="submit" name="submit" value="Submit" />    

  </form>
    

  <?php
  $submit = isset($_POST['submit']);
  $result1 = false;
   
  if($submit){
  for($i=0;$i<$count;$i++){ 
  $sql1="UPDATE tbl_images SET title='$title[$i]' WHERE id='$id[$i]'";
  $result1=mysql_query($sql1);
  }
  }
   
  if($result1){
  header("location:index.php");
  }
  ?>

<?

// Udaje
$host = "localhost";
$user = "db-user";
$pwd = "password";
$db = "db-name";

// spojení s databází
$conn = mysql_connect($host, $user, $pwd) or system_error('ERROR: Can not connect to MySQL-Server');
mysql_select_db($db) or system_error('ERROR: Can not connect to database "'.$db.'"');

// variables
$tablename = 'nazev_tabulky_obrazku';
$articleid = $_GET['id']; //to je z linku např.: www.tvoje.cz/?id=5
$cesta = 'images/articles/';

// formulář byl odeslán
if ($_POST['submit']=='odeslat')
{

   $id = $_POST['id'];
   $tittle = $_POST['tittle'];
  
   for($i=0;$i<count($id);$i++){
   
        $sql = "UPDATE $tablename SET 'tittle'= '".$tittle[$i]."' WHERE 'image_id' = '".$id[$i]."' LIMIT 1"; //nezapomeň, že tittle a image_id jsou názvy sloupců
        $query = mysql_query($sql);
   
   }

}

// načtení
echo '<table>';
echo '<form method="post">';

$sql  = "SELECT * FROM $tablename articleid=$articleid ORDER BY id ASC";
$query = mysql_query($sql);
while ($row = mysql_fetch_assoc($query)) {

$obrazek = $cesta.$row['image_name'];

echo '<tr>';
echo '<td>';
echo '<img src="'.$obrazek.'">';
echo '</td>';
echo '<td>';
echo '<input type="text" name="tittle[]" value="">';
echo '<input type="hidden" name="id[]" value="'.$row['image_id'].'">';
echo '</td>';
echo '</tr>';

}

echo '<tr>';
echo '<td>';
echo '<input type="submit" value="odeslat" name="submit">';
echo '</td>';
echo '</tr>';

echo '</form>';
echo '</table>';

?>