การทำฟอร์มกรอกข้อมูลเข้าดาต้าเบสอ่ะคับแต่ไม่รู้ว่าติดตงไหนรบกวนผู้รู้ด้วยนะครับขอบคุณครับ

 <?php
                    if ($item->confirm == "1") {
                        echo "<span class='icon-ok'></span>";
                    } elseif ($item->confirm == "2") {
                        echo "<span class='icon-remove'></span>";
                    } elseif ($user->username == $item->empn && $this->lists['confirm_status']) {
                        //print $item->id;                            
                        ?>
                        <a href="confirm_regis.php?id=<?php echo $item->id; ?>"> <button class="btn btn-success">ยืนยันการเข้าอบรม</button></a>
 <a href="#login-box" class="login-window btn btn-danger">ยกเลิกการเข้าอบรม</a>
  <form action="cancel_regis.php?id=<?php echo $item->id; ?>" method="GET" enctype="multipart/form-data" name="formx" id="formx"> 
                                <input type="hidden" name="id" value="<?php echo $item->id; ?>" />
                                
                                <div id="login-box" class="login-popup">
                            <a href="#" class="close"><class title="Close Window" alt="Close" />&nbsp;&nbsp;X</a><br>        
 <label >ขอยกเลิกการอบรมเนื่องด้วย</label>&nbsp;&nbsp; 

                              <input name="cancel" type="text" id="cancel" value="<?php echo $item->fcancel; ?>" size="10" />
 <a href="cancel_regis.php?id=<?php echo $item->id; ?>"> <button class="btn btn-danger">ยืนยันการเข้าอบรม</button></a>
                        
                        </div>

                    </form>

<?php //
require './PHPMailer/PHPMailerAutoload.php';

require './config/config.php';
$id = $_GET['id'];
if (isset($_REQUEST["id"])) {  
  $id = $_REQUEST["id"];
  $cancel = $_REQUEST['cancel'];
  $con = mysql_connect($host, $username, $password) or die("Can not connect DB");
    if ($con) {
        mysql_select_db($dbname, $con) or die("Can not select db");
        mysql_query("SET NAMES utf8", $con);
        $strSQL = "UPDATE tr_training_register SET ";
        $sql = "update tr_training_register set confirm=2, fcancel='$cancel', confirm_date=now() where id=" . $id;
       
        if (mysql_query($sql, $con)) {
           $sql = "select training_id,empn from tr_training_register where id=" . $id;
           $result=mysql_query($sql, $con);
           $rs=mysql_fetch_object($result);
           $sql = "select course_name,start_date,end_date from tr_training t,tr_course c where t.course_id=c.id and t.id=".$rs->training_id;
          $resultC=mysql_query($sql, $con);
          $rsC=mysql_fetch_object($resultC);
     }
        mysql_close($con);
    }
}
?>
<script>history.back();</script>