Solved

Download one file at a time..

Posted on 2004-08-16
5
149 Views
Last Modified: 2006-11-17
Hi I run a download site and i want people to download only one file at a time because huge traffic at the time makes my server slow.. aslo i want the downloads not to support download managers...
is there any script like that..

Your help will be really appriciated..
thankyou
waiting for some good replies..
0
Comment
Question by:xp17
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 
LVL 7

Accepted Solution

by:
petoskey-001 earned 125 total points
ID: 11817993
I would recommend using MySql and the register_shutdown function.  Assume you have a mysql table to store the current downloaders, then you use php passthrough to pipe all your files to the client.  When the script finishes, you remove the record from the MySql table.  Your in the PHP area, so I assume your not looking for .htaccess type solutions.  The table makes the IP address a primary key so if the insert fails, the script dies and the download passthrough is never reached.

1. First create the table.
create table downloaders ( ip unsigned bigint not null primary key );

2. Get the IP address as a number.  You can also use sessions to support multiple people behind a firewall...
$IP = $_SERVER['REMOTE_ADDR'];
$IP = str_replace(".", "", $IP);

3. Create a Shutdown Function
function download_done() {
    $q = "delete from downloaders where ip = $IP";
    $r = mysql_query($q);
}

4. Register the shutdown function

register_shutdown_function('download_done');

5. Add the Download wrapper
// Add the record that were downloding or DIE
$q = "insert into current_downloaders values ($IP)";
$res = mysql_query($q) or die('Sorry, only one download at a time is allowed');

// Send the file using php
$file = passthru('echo filename');

// Implied... end of script calls shutdown function


You can improve it by using sessions or something similar instead of IP addresses.  All AOL users will be sharing the same IP ranges.  The concept is the same.


0
 

Author Comment

by:xp17
ID: 11823288
Well i am very new at php..
is there a readymade script with instructions that tells you what to do..
Thankyou
0
 
LVL 1

Expert Comment

by:danutz
ID: 11835126
0

Featured Post

WordPress Tutorial 1: Installation & Setup

WordPress is a very popular option for running your web site and can be used to get your content online quickly for the world to see. This guide will walk you through installing the WordPress server software and the initial setup process.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

These days socially coordinated efforts have turned into a critical requirement for enterprises.
Introduction This article is intended for those who are new to PHP error handling (https://www.experts-exchange.com/articles/11769/And-by-the-way-I-am-New-to-PHP.html).  It addresses one of the most common problems that plague beginning PHP develop…
The viewer will learn how to dynamically set the form action using jQuery.
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…

631 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question