(PHP Extension) Restart/Resume FTP Download

Resume downloading a file from an FTP server.

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

<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

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

$ftp = new CkFtp2();

$ftp->put_Hostname('ftp.example.com');
$ftp->put_Username('login');
$ftp->put_Password('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 is located.
// This step is only necessary if the file is not in the root directory
// for the FTP account.
$success = $ftp->ChangeRemoteDir('temp');
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

// To resume a download, it is assumed that the partial file
// is already present on the local filesystem.
// You only need to set the RestartNext property to resume
// the download.  The Chilkat FTP component sets the resume
// point by getting the existing size of the target (local) file.
$ftp->put_RestartNext(true);

$localFilename = 'big.zip';
$remoteFilename = 'big.zip';

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

$success = $ftp->Disconnect();

print 'File Downloaded!' . "\n";

?>