Restart/Resume FTP Upload

Demonstrates how to restart / resume an FTP upload.

Download 32-bit Chilkat FTP2 ActiveX (.msi)

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

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

<?php

$ftp = new COM("Chilkat.Ftp2");

//  Any string unlocks the component for the 1st 30-days.
$success = $ftp->UnlockComponent('Anything for 30-day trial');
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

$ftp->Hostname = 'ftp.chilkatsoft.com';
$ftp->Username = '****';
$ftp->Password = '****';

//  Connect and login to the FTP server.
$success = $ftp->Connect();
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

//  Change to the remote directory where the file will be uploaded.
$success = $ftp->ChangeRemoteDir('temp');
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

//  In this example, assume that a previous FTP upload failed,
//  and the incomplete file (bigFile.zip) exists on the FTP server.
//  You only need to set the RestartNext property to resume
//  the upload.  When RestartNext is set, the next call
//  to PutFile (or PutFileFromBinaryData, PutFileFromTextData)
//  will automatically resume the upload from the point of failure.
//  (The way it works is that the FTP component sends a "SIZE"
//  command to the FTP server to find out how many bytes of
//  the file already exist on the server.  It then begins
//  uploading from that point.

//  Note: After PutFile is called, the RestartNext property
//  is automatically set to false.
$ftp->RestartNext = true;

//  Upload a file with restart.
$localFilename = 'bigFile.zip';
$remoteFilename = 'bigFile.zip';

$success = $ftp->PutFile($localFilename,$remoteFilename);
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

$ftp->Disconnect();

print 'File Uploaded!' . "\n";
?>