update และแก้ไขภาพไม่ได้ครับ อัพแล้วขึ้นหน้าขาวๆครับ

$strid = null;

      if(isset($_GET["id"]))
           {
             $strid = $_GET["id"];
           }


$sql = "SELECT * FROM images_bill
		WHERE member_id = '$_SESSION[login_true]' AND id = '".$strid."'";

$query = $conn->query($sql) or die( $conn->error. "<br>$sql");
$result = $query->fetch_assoc();
//$img_n = $result["img_name"];
//$id = $result["id"];
//echo "$id";

		//*** Update Record ***//
		//$strSQL = "UPDATE images_bill SET img_name = WHERE id = '".$_GET["id"]."' ";
		//$objQuery = $conn->query($sql) or die( $conn->error. "<br>$sql");	

	if(move_uploaded_file($_FILES["filUpload"]["tmp_name"],"/member/images/".$_FILES["filUpload"]["name"]))
		{

			//*** Delete Old File ***//			
			@unlink("/member/images/".$_POST["hdnOldFile"]);
			
			//*** Update New File ***//
			$strSQL = "UPDATE images_bill SET img_name = '".$_FILES["filUpload"]["name"]."' 
			WHERE member_id = '$_SESSION[login_true]' AND id = '".$strid."'";

			$objQuery = $conn->query($strSQL) or die( $conn->error. "<br>$strSQL");

			echo "Copy/Upload Complete<br>";

<form name="form1" method="post" action="update_pic.php?id=<?php echo $_GET["id"];?>" enctype="multipart/form-data">
	Edit Picture :<br>
	
	<img src="/member/images/<?php echo $result["img_name"];?>"><br>
	Picture : <input type="file" name="filUpload"><br>
	<input size="100%" type="images" name="hdnOldFile" value="<?php echo $result["img_name"];?>" >
	<input name="btnSubmit" type="submit" value="Submit">
	</form>

<?php
include('check_user.php');
$strid = null;

      if(isset($_GET["id"]))
           {
             $strid = $_GET["id"];
           }


$sql = "SELECT * FROM images_bill
		WHERE member_id = '$_SESSION[login_true]' AND id = '".$strid."'";

$query = $conn->query($sql) or die( $conn->error. "<br>$sql");
$result = $query->fetch_assoc();
//$img_n = $result["img_name"];
$id = $result["id"];
echo "$id";
?>

<form name="form1" method="post" action="update_pic.php?id=<?php echo $strid;?>" enctype="multipart/form-data">
	Edit Picture :<br>
	
	<img src="/member/images/<?php echo $result["img_name"];?>"><br>
	Picture : <input type="file" name="filUpload"><br>
	<input size="100%" type="images" name="hdnOldFile" value="<?php echo $result["img_name"];?>" >
	<input name="btnSubmit" type="submit" value="Submit">
	</form>