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ftp_nb_fget

PHP function Edit on GitHub ✎

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

Retrieves a file from the FTP server and writes it to an open file (non-blocking)

Description

ftp_nb_fget(FTP\Connection $ftp, resource $stream, string $remote_filename, int $mode = FTP_BINARY, int $offset = 0): int

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.

Parameters

ftp: Ftp
stream: An open file pointer in which we store the data.
remote_filename: The remote file path.
mode: The transfer mode. Must be either FTP_ASCII or FTP_BINARY.
offset: The position in the remote file to start downloading from.

Return Values

Returns FTP_FAILED or FTP_FINISHED or FTP_MOREDATA.

Changelog

Version	Description
7.3.0	The `mode` parameter is now optional. Formerly it has been mandatory.

Examples

ftp_nb_fget() example

php

<?php

// open some file for writing
$file = 'index.php';
$fp = fopen($file, 'w');

$ftp = ftp_connect($ftp_server);

$login_result = ftp_login($ftp, $ftp_user_name, $ftp_user_pass);

// Initiate the download
$ret = ftp_nb_fget($ftp, $fp, $file, FTP_BINARY);
while ($ret == FTP_MOREDATA) {

   // Do whatever you want
   echo ".";

   // Continue downloading...
   $ret = ftp_nb_continue($ftp);
}
if ($ret != FTP_FINISHED) {
   echo "There was an error downloading the file...";
   exit(1);
}

// close filepointer
fclose($fp);
?>