รบกวนด้วยค่ะ อาทิตย์หนึ่งแ้ล้ว ยังแก้ไม่ได้เลย ขอบคุณมากๆ เลยค่ะ

<?php
$photo			= $_FILES['photo']['tmp_name'];
$photo_name		= $_FILES['photo']['name'];
$photo_size		= $_FILES['photo']['size'];
$photo_type		= $_FILES['photo']['type'];
$detail			= $_POST['detail'];
$id_title		= $_POST['id_title'];
if (!$photo){
	echo "<h3>error:ไม่สามารถ upload รูปภาพได้</h3>";
	exit();
}
$ext=strtolower(end(explode('.',$photo_name)));

if($ext == "jpg" or $ext == "jpeg" or $ext == "png" or $ext == "gif") {
	include "connect.php";
	$sql = "insert into tb_photo values (null,' ','$detail','$id_title') ";
	mysql_db_query($dbname,$sql);
	$sql = "select max(id_photo) from tb_photo";
	$result = mysql_db_query($dbname,$sql);
	$r = mysql_fetch_array($result);
	$id_max = $r[0];
	$filename = $id_max.".".$ext;
	copy($photo,"images_large/$filename");
	if($ext=="jpg" or $ext=="jpeg") {
		$ori_img=imagecreatefromjpeg($photo);
	} else if ($ext=="png") {
		$ori_img=imagecreatefrompng($photo);
	}else if ($ext=="gif"){
		$ori_img=imagecreatefromgif($photo);
	}
	$ori_size=getimagesize($photo);
	$ori_w=$ori_size[0];
	$ori_h=$ori_size[1];
	if($ori_w>=$ori_h) {
		$new_w=100;
		$new_h=round(($new_w/$ori_w)*$ori_h);
	} else {
		$new_img=imagecreatetruecolor($new_w,$new_h);
		imagecopyresized($new_img,$ori_img,0,0,0,0,$new_w,$new_h,$ori_w,$ori_h);
		if($ext == "jpg" or $ext == "jpeg") {
			imagejpeg($new_img,"images_small/$filename");
		} else if($ext == "png") {
			imagepng($new_img,"images_small/$filename");
		} else if($ext == "gif") {
			imagegif($new_img,"images_small/$filename");
		}
		imagedestroy($ori_img);
		imagedestroy($new_img);
		$sql="update tb_photo set name_photo='$filename' where id_photo='$id_max' ";
		mysql_db_query($dbname,$sql);
		echo"<h3>upload รูปภาพเรียบร้อยแล้ว</h3>";
		echo"<a href='admin_photo.php?id_title=$id_title'>กลับหน้าหลัก</a>";
		mysql_close();
		echo "<h3>error: ไม่สามารถ upload รูปภาพได้ครับ</h3>";
	}
}
?>