PHP Anti-Theft chain code example, PHP anti-theft Instance _php tutorial

Source: Internet
Author: User
Tags learn php learn php programming

PHP Anti-Theft chain code example, PHP anti-theft instance


Anti-theft chain is a very common web programming technique at present. This article shows an example of how to implement the PHP anti-theft chain. Share it for everyone's reference. Here's how:

The main function code is as follows:

<?php/* How to use: Save the above code as dao4.php, such as Test Validatecode.rar at the site http://www. Xxxx.com, use the following code to indicate the download connection. File name? site=1&file= files such as the following url:http://www. Xxxx.cn/dao4.php?site=1&file=validatecode.rar */$ADMIN [Defaulturl] = "http://www. Xxxx.com/404.htm "; Hotlinking returns the address $okaysites = Array (  "http://www. xxxx.com/",  " http://XXXX.com "); Whitelist $admin[url_1] = "http://www. Xxxx.com/download/"; Download location 1$admin[url_2] = ""; Download location 2, and so on $reffer = $HTTP _referer;if ($reffer) {  $yes = 0;  while (list ($domain, $subarray) = each ($okaysites)) {    if (Ereg ($subarray, "$reffer")) {      $yes = 1;    }  }  $theu = "url". "_" . "$site";  if ($ADMIN [$theu] and $yes = = 1) {    header ("Location: $ADMIN [$theu]/$file"),  } else {    header ("Location: $ Admin[defaulturl] ");}  } else {  header ("Location: $ADMIN [Defaulturl]");}? >

I hope this article will help you learn PHP programming.


PHP set code for anti-theft chain

Instead of using PHP to consume more resources, it is recommended to start with the server and change the Apache configuration
The following is the PHP implementation of the code, Xxx.mp3 is the actual address of your music file, when the external spread only the PHP address, MP3 address is not public
if (Strpos ($_server[' http_referer '), ' qq.com ')!== FALSE) {
Header (' http/1.1 404 Not Found ');
Exit
}
ReadFile (' Xxx.mp3 ');
?>

PHP set code for anti-theft chain

Can be implemented you can search the web of PHP binary output image of the method because the image output to go through PHP, so you can use PHP to first judge

http://www.bkjia.com/PHPjc/869448.html www.bkjia.com true http://www.bkjia.com/PHPjc/869448.html techarticle PHP Anti-theft chain code example, PHP anti-theft instance anti-theft chain is a very common web programming skills. This article shows an example of how to implement the PHP anti-theft chain. Share for the big ...

  • Contact Us

    The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

    If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

    A Free Trial That Lets You Build Big!

    Start building with 50+ products and up to 12 months usage for Elastic Compute Service

    • Sales Support

      1 on 1 presale consultation

    • After-Sales Support

      24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.