Question

Here’s the situation… I have two servers, server 1 and server 2.
server 1 downloads a csv file from server 2, deletes it off server 2, reads lines from it and does some processing.

While it is processing, the file on server 2 can be re-created or changed, adding more lines.
After it is done processing, server 1 needs to upload the file back to server 2.

However, ftp_put() will completely overwrite the file on server 2. What I really want to do is append to the file on server 2 and not overwrite it. Is there any way to do this?

Answer 1

Curl support appending for FTP:

curl_setopt($ch, CURLOPT_FTPAPPEND, TRUE ); // APPEND FLAG

This might be what you’re looking for. Are you familiar with curl?

The other option is to use ftp:// / ftps:// streams, since PHP 5 they allow appending. See ftp://; ftps:// ^Docs. Might be easier to access.