SFTP Resume Download

Demonstrates how to resume an SFTP download from a previous partial download.

Download Chilkat 32-bit SSH / SFTP ActiveX (.msi)

Download All 32-bit Chilkat ActiveX Components (.zip)

Download All 64-bit Chilkat ActiveX Components (.zip)

<?php

//  Important: It is helpful to send the contents of the
//  sftp.LastErrorText property when requesting support.

$sftp = new COM("Chilkat.SFtp");

//  Any string automatically begins a fully-functional 30-day trial.
$success = $sftp->UnlockComponent('Anything for 30-day trial');
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

//  Set some timeouts, in milliseconds:
$sftp->ConnectTimeoutMs = 5000;
$sftp->IdleTimeoutMs = 10000;

//  Connect to the SSH server.
//  The standard SSH port = 22
//  The hostname may be a hostname or IP address.

$hostname = 'www.my-ssh-server.com';
$port = 22;
$success = $sftp->Connect($hostname,$port);
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

//  Authenticate with the SSH server.  Chilkat SFTP supports
//  both password-based authenication as well as public-key
//  authentication.  This example uses password authenication.
$success = $sftp->AuthenticatePw('myLogin','myPassword');
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

//  After authenticating, the SFTP subsystem must be initialized:
$success = $sftp->InitializeSftp();
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

//  Download the file:

$localFilePath = 'c:/temp/hamlet.xml';
$remoteFilePath = 'subdir1/subdir2/hamlet.xml';
//  The ResumeDownloadFileByName method will check
//  the local file and begin downloading the remote file
//  at the appropriate point.  For example, if the local
//  file is already 215624 bytes long, it will begin downloading
//  the remote file at the 215625'th byte -- appending to
//  the local file.
$success = $sftp->ResumeDownloadFileByName($remoteFilePath,$localFilePath);
if ($success != true) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

print 'Success.' . "\n";
?>