PHP: How do I avoid reading partial files that are pushed to me with FTP?

Question

Files are being pushed to my server via FTP. I process them with PHP code in a Drupal module. O/S is Ubuntu and the FTP server is vsftp.

At regular intervals I will

Answer 1

The lsof linux command lists opened files on your system. I suggest executing it with shell_exec() from PHP and parsing the output to see what files are still being used by your FTP server.