PHP - 下载的次数 [英] PHP - Number of times downloaded

问题描述

如何显示一个计数器来计算文件下载次数？我以前见过。 下载450次。谢谢。

How can I display a counter that counts the number of times a file is downloaded? I've seen it before. "Downloaded 450 times". Thanks.

推荐答案

不要让用户直接下载文件，而是通过如下所示的脚本...

Don't let the user download a file directly, but trough a script like the following ...

<?php

   $file = $_REQUEST['file'];
   $dldir = "downloads/";

   if (
       (file_exists($dldir.$file) &&               // file exists
       (strpos($file, "../") === false) &&  // prevent an attacker from switching to a parent directory
      ) {

       header('Content-type: '.mime_content_type($dldir.file));
       header("Content-Transfer-Encoding: binary");
       header("Content-Length: " . filesize($dldir.$file) ."; "); 
       header('Content-Disposition: attachment; filename="'.$file.'"');

       echo file_get_contents($dldir.$file);

       /** Update the counter here, e.g. by using mysql **/
   } else {
       die("File not found");
   }

?>

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