如何启动/强制下载外部以PHP或其他语言存在的文件？ [英] How do you initiate/force a download for files that reside externally in PHP or other language?

问题描述

如果你有外部的图像或其他文件，当用户点击它时，如何强制浏览器下载链接？

If you have images or other files that reside externally, how do force the browser to download the link when a user click on it?

使用Content-disposition：attachment; header会这样做，但它不适用于外部驻留的文件而不在本地读取和导入文件。

The use of "Content-disposition: attachment;" header would do that, but it is not working for files that resides externally without reading and importing the file locally.

推荐答案

你将必须先在服务器上加载资源。你可能也想做一些缓存：

You will have to load the resource on the server first. You might want to do some caching also:

<?php
  header("Content-disposition: attachment; filename=myfile.jpg");
  echo file_get_contents("http://host.tld/path/to/myfile.jpg");
?>

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