(PHP Extension) AWS Transfer for SFTP (Amazon S3)

Once you've setup your AWS Transfer for SFTP in the AWS Console, interacting with it is no different than any other SSH/SFTP server. AWS will provide a private key in PEM format. It is used for authentication (instead of a password).

For more information, see https://docs.aws.amazon.com/transfer/latest/userguide/getting-started-use-the-service.html

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$sftp = new CkSFtp();

// Connect to the AWS SFTP server.
// Change the domain to your value.
$domain = 's-123456df999999fab.server.transfer.eu-west-2.amazonaws.com';
$port = 22;
$success = $sftp->Connect($domain,$port);
if ($success == false) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

// Load your AWS SFTP private key PEM file..
$sshKey = new CkSshKey();
$keyText = $sshKey->loadText('qa_data/pem/s3_sftp_privateKey.pem');
if ($sshKey->get_LastMethodSuccess() != true) {
    print $sshKey->lastErrorText() . "\n";
    exit;
}

$success = $sshKey->FromOpenSshPrivateKey($keyText);
if ($success == false) {
    print $sshKey->lastErrorText() . "\n";
    exit;
}

// Authenticate with the SSH server using the private key.
$success = $sftp->AuthenticatePk('myUsername',$sshKey);
if ($success == false) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

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

// Upload from the local file to the SSH server.
// Important -- the remote filepath is the 1st argument,
// the local filepath is the 2nd argument;
$remoteFilePath = 'hamlet.xml';
$localFilePath = 'c:/temp/hamlet.xml';

$success = $sftp->UploadFileByName($remoteFilePath,$localFilePath);
if ($success == false) {
    print $sftp->lastErrorText() . "\n";
    exit;
}

print 'Success.' . "\n";

?>