(PHP 4 >= 4.3.0, PHP 5, PHP 7)
ftp_nb_continue — Continues retrieving/sending a file (non-blocking)
$ftp_stream
   )Continues retrieving/sending a file non-blocking.
ftp_streamThe link identifier of the FTP connection.
   Returns FTP_FAILED or FTP_FINISHED
   or FTP_MOREDATA.
  
Example #1 ftp_nb_continue() example
<?php
// Initate the download
$ret = ftp_nb_get($my_connection, "test", "README", FTP_BINARY);
while ($ret == FTP_MOREDATA) {
   // Continue downloading...
   $ret = ftp_nb_continue($my_connection);
}
if ($ret != FTP_FINISHED) {
   echo "There was an error downloading the file...";
   exit(1);
}
?>