Home > Backend Development > PHP Tutorial > PHP实现文件安全下载的实例_PHP

PHP实现文件安全下载的实例_PHP

WBOY
Release: 2016-06-01 12:31:53
Original
710 people have browsed it

程序如下:

  $file_name = "info_check.exe";

  $file_dir = "/public/www/download/";

  if (!file_exists($file_dir . $file_name)) { //检查文件是否存在

  echo "文件找不到";

  exit;

  } else {

  $file = fopen($file_dir . $file_name,"r"); //打开文件

  //输入文件标签

  Header("Content-type: application/octet-stream");

  Header("Accept-Ranges: bytes");

  Header("Accept-Length: ".filesize($file_dir . $file_name));

  Header("Content-Disposition: attachment; filename=" . $file_name);

  //输出文件内容

  echo fread($file,filesize($file_dir . $file_name));

  fclose($file);

  exit;}

  而如果文件路径是"http"或者"ftp"网址的话,则源代码会有少许改变,程序如下:

  $file_name = "info_check.exe";

  $file_dir = "www.easycn.net/";

  $file = @ fopen($file_dir . $file_name,"r");

  if (!$file) {

  echo "文件找不到";

  } else {

  Header("Content-type: application/octet-stream");

  Header("Content-Disposition: attachment; filename=" . $file_name);

  while (!feof ($file)) {

  echo fread($file,50000);

  }

  fclose ($file);

  }

  这样就可以用PHP直接输出文件了

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template