I am having some JSON data that I encoded it with PHP\'s json_encode(), it looks like this:
{
\"site\": \"site1\",
\"nbrSicEnt\": 85,
}
According to Can you append lines to a remote file using ftp_put() or something similar? and Stream FTP Upload with PHP? you should be able to do something using either CURL or PHP's FTP wrappers using file_put_contents().
$data = json_encode($object);
file_put_contents("ftp://user:pass@host/dir/file.ext", $data, FILE_APPEND);