问题描述
我有一个目录，其中包含需要使用 PHP 批量处理的文件.文件通过 FTP 复制到服务器上.有些文件非常大，需要很长时间才能复制.如何在 PHP 中确定文件是否仍在传输中(以便我可以跳过对该文件的处理并在批处理的下一次运行中处理它)?
I have a directory with files that need processing in a batch with PHP. The files are copied on the server via FTP. Some of the files are very big and take a long time to copy. How can I determine in PHP if a file is still being transferred (so I can skip the processing on that file and process it in the next run of the batch process)?
一种可能是获取文件大小，稍等片刻，然后验证文件大小是否不同.这不是防水的，因为传输只是暂停了片刻的可能性很小......
A possibility is to get the file size, wait a few moments, and verify if the file size is different. This is not waterproof because there is a slight chance that the transfer was simply stalled for a few moments...
推荐答案
我们的服务器管理员建议使用 ftpwho，它会输出当前传输的文件.
Our server admin suggested ftpwho, which outputs which files are currently transferred.
http://www.castaglia.org/proftpd/doc/ftpwho.html
所以解决的办法是解析ftpwho的输出，看目录中是否有文件正在传输.
So the solution is to parse the output of ftpwho to see if a file in the directory is being transferred.
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