(PHP 4 >= 4.3.0, PHP 5, PHP 7)
Retrieves a file from the FTP server and writes it to a local file (non-blocking)
int ftp_nb_get ( resource $ftp_stream, string $local_file, string $remote_file, int $mode [, int $resumepos = 0 ] )
ftp_nb_get() retrieves a remote file from the FTP server, and saves it into a local file.
The difference between this function and ftp_get() is that this function retrieves the file asynchronou