Редактирование данных БД из под страници

<?php
<table class="tabpayments">
  <thead>
        <tr>
        <th scope="col" abbr="Starter">Имя пользовтаеля</th>
        <th scope="col" abbr="Medium">Емайл пользовтаеля</th>
        <th scope="col" abbr="Business">Реферал пользовтаеля</th>
        <th scope="col" abbr="Deluxe">QIWI пользовтаеля</th>
        <th scope="col" abbr="Deluxe">Редактирование</th>
        </tr>
    </thead>
<tbody>
<?php
$sql_top=mysql_query("SELECT login,email,ref,qiwi FROM users WHERE login='$u_login'");
while($top_mics=mysql_fetch_row($sql_top)){
echo'
<tr>
<td class="top_t1">'.$top_mics[0].'</td>
<td class="top_t2">'.$top_mics[1].'</td>
<td class="top_t2">'.$top_mics[2].'</td>
<td class="top_t2">'.$top_mics[3].'</td>
<td class="top_t2">Редактирование</td>
</tr>';
}
?>
</tbody>
</table>

<?php 
$select_sql = "SELECT uid,email,qiwi FROM users WHERE login='$u_login'"; 
$result = mysql_query($select_sql); 
$row = mysql_fetch_array($result); 
printf("<form action='/pix.php' method='post' name='forma'> 
<fieldset> 
<input type='hidden' name='uid' value='%s'>
<br/> 
<label for='u_email'>Email:</label>
<br/> 
<input type='text' name='u_email' size='30' value='%s'>
<br/> 
<label for='u_qiwi'>QIWI</label>
<br/> 
<input name='u_qiwi' type='text' size='30' value='%s'> 
</fieldset> 
<br/> 
<fieldset> 
<input id='submit' type='submit' value='Редактировать запись'>
<br/> 
</fieldset>
</form>",$row['uid'], $row['email'], $row['qiwi']); 
?>

<?php
require 'connect.php';
$id=$_REQUEST['uid'];
$u_email=trim($_REQUEST['u_email']);
$u_qiwi=trim($_REQUEST['u_qiwi']);
 
 
$update_sql = "UPDATE users SET email='$u_email', qiwi='$u_qiwi' WHERE uid='$id'";
mysql_query($update_sql) or die("Ошибка вставки" . mysql_error());
echo '<p>Запись успешно обновлена!</p>';
?>