ช่วยดู code ให้หน่อย ค่ะ เป็บ ระบบ อัพเดด แก้ไขข้อมูลตัวเองในหน้า web พอแก้ไข ข้อมมูลกด submit ข้อมูล

<?php
session_start();
$mode = isset($_GET['mode']) ? $_GET['mode'] : $mode;

if(!isset($_SESSION['user']))
	header('Location: signin.php?redirect=edit_address.php?mode='.$mode);

if(isset($_GET['confirm']))
{
	$keys = array('fullname','email','address1','address2','fax','phone','mobile','city','state','country','zip');
	foreach($keys as $value)
		$_SESSION[$mode][$value] = $_POST[$value];
	header('Location: checkout.php');
}
require_once('header.php');

require_once('Connections/conn1.php'); 
mysql_select_db($database_conn1, $conn1);
$query = "SELECT * FROM tbcountries ORDER BY name_cnt";


$rsCountries = mysql_query($query, $conn1) or die(mysql_error());
$strSQL = "UPDATE tbusers SET "; 
$strSQL .="fullname_usr = '".$_POST["fullname"]."' "; 
$strSQL .=",address1_usr = '".$_POST["address1"]."' "; 
$strSQL .=",address2_usr = '".$_POST["address2"]."' "; 
$strSQL .=",city_usr = '".$_POST["city"]."' "; 
$strSQL .=",state_usr = '".$_POST["state"]."' "; 
$strSQL .=",country_usr = '".$_POST["country"]."' "; 
$strSQL .=",zip_usr = '".$_POST["zip"]."' "; 
$strSQL .=",phone_usr = '".$_POST["phone"]."' "; 
$strSQL .=",mobile_usr = '".$_POST["mobile"]."' "; 
$strSQL .=",fax_usr = '".$_POST["fax"]."' "; 
$strSQL .=",email_usr = '".$_POST["email"]."' "; 
$strSQL .="WHERE email_usr='{$_POST['email']}'";
//$strSQL .="WHERE email_usr = '".$_POST["email_usr"]."' "; 

$objQuery = mysql_query($strSQL); 

?>
	<form action="edit1_user.php<?php echo $mode; ?>" method="post" style="margin:0;">
	<div id="container_body">
		<div id="title">
			<div id="txTitle">EDIT <?php if($mode=='ship') echo 'SHIPPING '; ?>ADDRESS</div>
		</div>
		<div id="content">
		<table width="95%" border="0" cellspacing="0" cellpadding="10">
          <tr>
            <td width="50%" align="left"><strong>Fill and Confirm</strong></td>
            <td width="50%" align="right">&nbsp;</td>
          </tr>
        </table>
		<hr align="center" width="99%" size="1" noshade="noshade"  color="#636363"  class="line1"/>
		<table width="90%" border="0" align="center" cellpadding="3" cellspacing="0">
          <tr>
            <td align="right">&nbsp;</td>
            <td align="left">&nbsp;</td>
          </tr>
          <tr>
            <td align="right">Full Name : </td>
            <td align="left"><input name="fullname" type="text" id="fullname" value="<?php echo $_SESSION[$mode]['fullname']; ?>" /></td>
          </tr>
		  <?php if($mode='ord'){?>
          <tr>
            <td align="right">Email : </td>
            <td align="left"><input name="email" type="text" id="email" value="<?php echo $_SESSION[$mode]['email']; ?>" /></td>
          </tr>
		  <?php }?>
          <tr>
            <td align="right">Address Line 1 : </td>
            <td align="left"><input name="address1" type="text" id="address1" value="<?php echo $_SESSION[$mode]['address1']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">Address Line 2 : </td>
            <td align="left"><input name="address2" type="text" id="address2" value="<?php echo $_SESSION[$mode]['address2']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">City : </td>
            <td align="left"><input name="city" type="text" id="city" value="<?php echo $_SESSION[$mode]['city']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">State/Province/Region : </td>
            <td align="left"><input name="state" type="text" id="state" value="<?php echo $_SESSION[$mode]['state']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">Country : </td>
            <td align="left"><select name="country" id="country">
              <?php
while($country = mysql_fetch_assoc($rsCountries))
{
?>
              <option value="<?php echo $country['id_cnt']; ?>"<?php if($country['id_cnt']==$_SESSION[$mode]['country']) echo ' selected="selected"'; ?>><?php echo $country['name_cnt']; ?></option>
              <?php
}
?>
            </select></td>
          </tr>
          <tr>
            <td align="right">ZIP/Postal Code : </td>
            <td align="left"><input name="zip" type="text" id="zip" value="<?php echo $_SESSION[$mode]['zip']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">Home Phone : </td>
            <td align="left"><input name="phone" type="text" id="phone" value="<?php echo $_SESSION[$mode]['phone']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">Mobile Phone : </td>
            <td align="left"><input name="mobile" type="text" id="mobile" value="<?php echo $_SESSION[$mode]['mobile']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">Fax : </td>
            <td align="left"><input name="fax" type="text" id="fax" value="<?php echo $_SESSION[$mode]['fax']; ?>" /></td>
          </tr>
          <tr>
            <td align="right">&nbsp;</td>
            <td align="left">&nbsp;</td>
          </tr>
        </table>
		</div>
		<div id="foot">
		  <input type="image" name="imageField" src="images/bt_confirm.gif" style="margin-top:10px;" align="right"/>
		</div>
	</div>
	</form>
<?php
require_once('footer.php');
?>