PHP ftp_nb_fget function

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ftp_nb_fget

(PHP 4 >= 4.3.0, PHP 5)

ftp_nb_fget() retrieves a remote file from the FTP
server.

The difference between this function and ftp_fget() is
that this function retrieves the file asynchronously, so your program can
perform other operations while the file is being downloaded.

The link identifier of the FTP connection.

An open file pointer in which we store the data.

The remote file path.

The transfer mode. Must be either FTP_ASCII or
FTP_BINARY.

Returns FTP_FAILED or FTP_FINISHED
or FTP_MOREDATA.

Example 1. ftp_nb_fget() example

 
// open some file for reading
$file = 'index.php';
$fp = fopen($file, 'w');
 
$conn_id = ftp_connect($ftp_server);
 
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
 
// Initate the download
$ret = ftp_nb_fget($conn_id, $fp, $file, FTP_BINARY);
while ($ret == FTP_MOREDATA) {
 
   // Do whatever you want
   echo ".";
 
   // Continue downloading...
   $ret = ftp_nb_continue($conn_id);
}
if ($ret != FTP_FINISHED) {
   echo "There was an error downloading the file...";
   exit(1);
}
 
// close filepointer
fclose($fp);