การดาวน์โหลดไฟล์ แล้วไม่ขึ้นให้ดาวน์โหลด แก้มาเป็น ชม แล้วก็ยังไม่ได้

<?php
ob_start();
include("config.php");  
$download_files = $_POST['download_files'];

$result[2] = mysql_query("select * from files where download_files='$download_files'")
$dbarr[2] = mysql_fetch_array($result[2]) ;
$id = $dbarr[2]['id'];
$download_id = $dbarr[2]['download_id'];
$download_files = $dbarr[2]['download_files'];
$download_path = $dbarr[2]['download_path'];
$download_count = $dbarr[2]['download_count'];
$download_countlast = $dbarr[2]['download_countlast'];
$details_name = $dbarr[2]['details_name'];
$details_extension = $dbarr[2]['details_extension'];
$details_size = $dbarr[2]['details_size'];
$details_type = $dbarr[2]['details_type'];
$details_date = $dbarr[2]['details_date'];

//echo "$download_id <br> $download_files <br> $download_path";

$countlast_up = date('d-m-Y H:i');
$count_up = $download_count+1;

$sql[1] = "update files set download_countlast='$countlast_up', download_count='$count_up' WHERE id = '$id'";

$result = mysql_query($sql[1]);

header('Content-type: application/octetstream');
header('Content-Length: ' . filesize("./$download_path"));
header('Content-Disposition: attachment; filename="'.$details_name.'"');
readfile("./$download_path");
?>