มีปัญหาการแก้ไขข้อมูลสมาชิก ของ User คับ รายละเอียดด้านใน

<?
session_start();
if(!isset ($_SESSION['member_id']))
{
echo "<script>alert('please login');window.location='Maps.php';</script>";
exit();
}
include("connect.php");
$member_Firstname =$_SESSION['member_Firstname'];
$member_Lastname =$_SESSION['member_Lastname'];
$member_address =$_SESSION['member_address'];
$member_phone =$_SESSION['member_phone'];
$member_email =$_SESSION['member_email'];

if(empty ($member_Firstname) ||empty($member_Lastname))
{
echo "<script>alert('Please refill form');history.back();</script>";
exit();
}

$sql="update member set
member_Firstname ='$member_Firstname'
member_Lastname = '$member_Lastname'
member_address ='$member_address'
member_phone ='$member_phone'
member_email ='$member_email'
where member_id = '".$_SESSION['member_id']."' ";
mysql_query($sql) or die ("error=$sql");
echo "<script>alert(' ++ complete ++ ');window.location='user_page.php';</script>";
?>

if(empty ($member_Firstname) || empty($member_Lastname))
{
echo "<script>alert('Please refill form');history.back();</script>";
exit();
}

<?
session_start();
if(!isset ($_SESSION['member_id']))
{
echo "<script>alert('please login');window.location='Maps.php';</script>";
exit();
}
include("connect.php");
$member_Firstname =$_SESSION['member_Firstname'];
$member_Lastname =$_SESSION['member_Lastname'];
$member_address =$_SESSION['member_address'];
$member_phone =$_SESSION['member_phone'];
$member_email =$_SESSION['member_email'];

echo ".$member_Firstname.";
echo ".$member_Lastname.";
/*
if(empty ($member_Firstname) ||empty($member_Lastname))
{
echo "<script>alert('Please refill form');history.back();</script>";
exit();
}

$sql="update member set
member_Firstname ='$member_Firstname'
member_Lastname = '$member_Lastname'
member_address ='$member_address'
member_phone ='$member_phone'
member_email ='$member_email'
where member_id = '".$_SESSION['member_id']."' ";
mysql_query($sql) or die ("error=$sql");
echo "<script>alert(' ++ complete ++ ');window.location='user_page.php';</script>";
*/
?>

<?
session_start();
if(!isset($_SESSION['member_id']))
{
	echo "<script>alert('please login');window.location='Maps.php';</script>";
	exit();
}
include("connect.php");
$member_id = $_SESSION['member_id'];
$sql = "select * from member where member_id='member_id' ";
$query =mysql_query($sql) or die ("error=$sql");
$row =mysql_fetch_array($query);

?>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<center><form name="form1" method="post" action="editmem_save.php">
 <br>
  <table width="400" border="0" style="width: 400px">
    <tbody>  
      <tr>
        <td><font face="MS Sans Serif" font size="2" color=""><b>ชื่อ</b></font></td>
        <td><input name="member_Firstname" type="text" id="member_Firstname" size="35" value="<?=$row['member_Firstname']?>"></td>
      </tr>
      <tr>
        <td><font face="MS Sans Serif" font size="2" color=""><b>นามสกุล :</b></font></td>
        <td><input name="member_Lastname" type="text" id="member_Lastname" size="35" value="<?=$row['member_Lastname']?>"></td>
      </tr>
    </tbody>
  </table>
  <table width="400" border="0" style="width:"400">
    
    <tr>
      <td><font face="MS Sans Serif" font size="2" color=""><b>ที่อยู่</b></font></td>
      <td><center><label>
        <textarea name="member_address" id="member_address" cols="45" rows="5"><?=$row['member_address']?></textarea>
      </label></center></td>
    </tr>
    <tr>
      <td><font face="MS Sans Serif" font size="2" color=""><b>เบอร์โทรศัพท์</b></font></td>
      <td><label><input type="text" name="member_phone" id="member_phone" value="<?=$row['member_phone']?>">
      </label></td>
    </tr>
    <tr>
      <td><font face="MS Sans Serif" font size="2" color=""><b>อีเมลล์</b></font></td>
      <td><label>
        <input type="text" name="member_email" id="member_email" value="<?=$row['member_email']?>">
      </label></td>
    </tr>
    
  </table>
  <br>
    <input type="submit" name="Submit" value="ยืนยัน">
    </p>
</form></center>

if(empty ($member_Firstname))
{
 echo 'No have $member_Firstname';
} elseif (empty($member_Lastname)) {

 echo 'No have $member_Lastname';
} else {

$sql="update member set
member_Firstname = '$member_Firstname' ,
member_Lastname = '$member_Lastname' , 
member_address = '$member_address' ,
member_phone = '$member_phone' ,
member_email = '$member_email' 
where member_id = '".$_SESSION['member_id']."' ";
mysql_query($sql) or die ("error=$sql");
}