[MySQL][PHP]Wyświetlenie komunikatu., Musisz zaznaczyć checkbox. Opcje

[woxala123]

Jak zrobic żeby user musi zaznaczyć checkbox by móc wysłać formularz do edycji. Chodzi mi o komunikat jak wysyła niezaznaczone checboxy.
Oto kod

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<?php require_once('../Connections/myconn.php'); ?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "") 
{
  if (PHP_VERSION < 6) {
    $theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
  }
 
  $theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
 
  switch ($theType) {
    case "text":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;    
    case "long":
    case "int":
      $theValue = ($theValue != "") ? intval($theValue) : "NULL";
      break;
    case "double":
      $theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
      break;
    case "date":
      $theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
      break;
    case "defined":
      $theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
      break;
  }
  return $theValue;
}
}
 
mysql_select_db($database_myconn, $myconn);
$query_Recordset1 = "SELECT * FROM userlogin";
$Recordset1 = mysql_query($query_Recordset1, $myconn) or die(mysql_error());
$row_Recordset1 = mysql_fetch_assoc($Recordset1);
$totalRows_Recordset1 = mysql_num_rows($Recordset1);
?>
<form name="form1" method="post" action="edit_user.php">
  <table border="1" cellpadding="1" cellspacing="1">
    <tr>
      <td>Oznacz</td>
      <td>user_id</td>
      <td>firstname</td>
      <td>lastname</td>
      <td>username</td>
      <td>password</td>
      <td>email</td>
      <td>dateregister</td>
      <td>lastlogin</td>
      <td>active</td>
      <td>COLOR</td>
      <td>ip</td>
    </tr>
    <?php do { ?>
      <tr>
        <td><input name="checkbox[]" type="checkbox" id="checkbox[]" value="<?php echo $row_Recordset1['user_id']; ?>">
        <label for="checkbox[]"></label></td>
        <td><?php echo $row_Recordset1['user_id']; ?></td>
        <td><?php echo $row_Recordset1['firstname']; ?></td>
        <td><?php echo $row_Recordset1['lastname']; ?></td>
        <td><?php echo $row_Recordset1['username']; ?></td>
        <td><?php echo $row_Recordset1['password']; ?></td>
        <td><?php echo $row_Recordset1['email']; ?></td>
        <td><?php echo $row_Recordset1['dateregister']; ?></td>
        <td><?php echo $row_Recordset1['lastlogin']; ?></td>
        <td><?php echo $row_Recordset1['active']; ?></td>
        <td><?php echo $row_Recordset1['COLOR']; ?></td>
        <td><?php echo $row_Recordset1['ip']; ?></td>
      </tr>
      <?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>
  </table>
  <input type="submit" name="submit" id="submit" value="Wyślij">
</form>
<?php
mysql_free_result($Recordset1);
?>
 
 
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