(PHP Extension) Synchronize Local Directory Tree

Downloads files from the FTP server to a local directory tree. Synchronization modes include:

mode=0: Download all files
mode=1: Download all files that do not exist on the local filesystem.
mode=2: Download newer or non-existant files.
mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server..
mode=5: Download only missing files or files with size differences.
mode=6: Same as mode 5, but also download newer files.
mode=99: Do not download files, but instead delete remote files that do not exist locally.

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 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');

$ftp->put_KeepSessionLog(true);

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

// Set the current remote directory to the root of
// the tree to be downloaded.
$success = $ftp->ChangeRemoteDir('/subDir1');
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

// Recursively download all non-existant and newer files.
$mode = 2;
$success = $ftp->SyncLocalTree('c:/temp/subDir1',$mode);
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

$success = $ftp->Disconnect();

// Display the session log.  
print $ftp->sessionLog() . "\n";

?>