Home > Backend Development > PHP Tutorial > 使用PHP强制下载PDF文件示例_PHP

使用PHP强制下载PDF文件示例_PHP

WBOY
Release: 2016-06-01 11:56:31
Original
954 people have browsed it

我们有时会遇到这样一种情况,当需要下载一个PDF文件时,如果不经处理会直接在浏览器里打开PDF文件,然后再需要通过另存为才能保存下载文件。本文将通过PHP来实现直接下载PDF文件。

实现原理:我们仅仅只需要修改页面HTTP头,把Content-Type设置为force-download,问题即可解决。

请看代码:
复制代码 代码如下:
forceDownload("pdfdemo.pdf");
function forceDownload($filename) {

if (false == file_exists($filename)) {
return false;
}

// http headers
header('Content-Type: application-x/force-download');
header('Content-Disposition: attachment; filename="' . basename($filename) .'"');
header('Content-length: ' . filesize($filename));

// for IE6
if (false === strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE 6')) {
header('Cache-Control: no-cache, must-revalidate');
}
header('Pragma: no-cache');

// read file content and output
return readfile($filename);;
}

为了方便,我写了一个函数forceDownload(),然后通过调用该函数即可。

Related labels:
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