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I have a php-script that uploads files to an ftp server from a location with a very low bandwith, low reliability connection. I am currently using the ftp functions of php.
Sometimes the connection drops in the middle of a transfer. Is there a way to later resume the upload? How can this be done?
Edit:
People misunderstood that this is happening from a browser. However, this is not the case. It is a php cli script. So it is about a local file being uploaded to ftp, no user interaction.
Try getting the remote file’s size and then issuing the APPE ftp command with the difference. This will append to the file. See http://webmasterworld.com/forum88/4703.htm for an example. If you want real control over this, I recommend using PHP’s cURL functions.