获取 ftp_put 进度

问题描述

我在 Web 服务器上有一个 php 脚本，它通过 ftp_put 将文件上传到另一个远程服务器.

I have a php script on a web server that uploads a file to another remote server via ftp_put.

如何向用户显示当前的上传进度?

How can I display the current upload progress to the user?

我见过的唯一类似的系统是用于从用户上传文件，使用 ajax 请求检查服务器上上传文件的本地大小.

The only similar system I've seen is for file uploads from the user, with ajax requests to check the local size of the uploaded file on the server.

等效的系统是对 Web 服务器的 ajax 请求，然后检查远程服务器上的文件大小并将该数据返回给用户的客户端脚本.

The equivalent system would be ajax requests to the web server, that then checked file sizes on the remote server and returned that data to the user's clientscript.

这对我来说似乎非常低效.有没有更好的办法?

This seems horribly inefficient to me. Is there a better way?

推荐答案

使用 FTP URL 协议封装:

$url = "ftp://username:password@ftp.example.com/remote/dest/path/file.zip";
$local_path = "/local/source/path/file.zip";

$size = filesize($local_path) or die("Cannot retrieve size file");

$hout = fopen($url, "wb") or die("Cannot open destination file");
$hin = fopen($local_path, "rb") or die("Cannot open source file");

while (!feof($hin))
{
    $buf = fread($hin, 10240);
    fwrite($hout, $buf);
    echo "
".intval(ftell($hin)/$size*100)."%";
}

echo "
";

fclose($hin);
fclose($hout);

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