项目中有个700m左右的大文件,需要下载到本地电脑上,在网上找了段代码,如下:
我要评论 1 <?php
2 $realname = "xxx.pdf";
3 $filename = "xxx.pdf";
4 set_time_limit(0);
5 $filesize = filesize($realname);
6 header('content-description: file transfer');
7 header('content-type: application/octet-stream');
8 header('content-transfer-encoding: binary');
9 header('accept-ranges: bytes');
10 header('expires: 0');
11 header('cache-control: must-revalidate');
12 header('pragma: public');
13 header('content-length: ' . $filesize);
14 header('content-disposition: attachment; filename=' . $filename);
15
16 // 打开文件
17 $fp = fopen($realname, 'rb');
18 // 设置指针位置
19 fseek($fp, 0);
20
21 // 开启缓冲区
22 ob_start();
23 // 分段读取文件
24 while (!feof($fp)) {
25 $chunk_size = 1024 * 8; // 8kb
26 echo fread($fp, $chunk_size);
27 ob_flush(); // 刷新php缓冲区到web服务器
28 flush(); // 刷新web服务器缓冲区到浏览器
29 sleep(1); // 每1秒 下载 8 kb
30 }
31 // 关闭缓冲区
32 ob_end_clean();
33
34 fclose($fp);
完美下载!但是当部署到线上时,出现了问题:
说明:测试环境为http,线上环境为https
继续google....,找到如下代码:
<?php
$realname = "xxx.pdf";
$filename = "xxx.pdf";
set_time_limit(0);
$filesize = filesize($realname);
header('content-description: file transfer');
header('content-type: application/octet-stream');
header('content-transfer-encoding: binary');
header('accept-ranges: bytes');
header('expires: 0');
header('cache-control: must-revalidate, post-check=0, pre-check=0');
header('pragma: public');
header('content-length: ' . $filesize);
header('content-disposition: attachment; filename=' . $filename);
// 打开文件
$fp = fopen($realname, 'rb');
ob_clean();
ob_end_flush();
while (!feof($fp)) {
echo fread($fp, $filesize);
ob_flush(); // 刷新php缓冲区到web服务器
flush(); // 刷新web服务器缓冲区到浏览器
}
fclose($fp);
exit;
完美解决!
如对本文有疑问， 点击进行留言回复！！
网友评论