(PHP Extension) Delete Local Files that Do Not Exist on the FTP Server

Demonstrates how to get a list of local files in a directory tree that do not exist on the FTP server.

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 remote tree to be compared.
$success = $ftp->ChangeRemoteDir('abc123');
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

// Recursively descend the local directory tree
// and find the files that exist locally but not remotely.
// These are the files what would be uploaded via
// the SyncRemoteTree method call with mode = 1.
// (Mode 1 would upload all files that do not exist on the FTP server.)

// The actual uploading is avoided by setting the preview-only argument to true.
$mode = 1;
$descendTree = true;
$previewOnly = true;
$success = $ftp->SyncRemoteTree2('/temp/abc123',$mode,$descendTree,$previewOnly);
if ($success != true) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

// The files what would've been uploaded are now available in the SyncPreview property,
// which contains a list of local file paths, one per line.
// A program can iterate over them like this:
$sa = new CkStringArray();
$sa->LoadFromText($ftp->syncPreview());

$fac = new CkFileAccess();

$numFiles = $sa->get_Count();
$i = 0;

while (($i < $numFiles)) {
    $localFilePath = $sa->getString($i);
    print $localFilePath . "\n";

    // An application can delete the file using Chilkat's file access object,
    // or it can choose to use the native file API available in the programming language:
    $success = $fac->FileDelete($localFilePath);
    if ($success != true) {
        print 'Failed to delete: ' . $localFilePath . "\n";
    }

    $i = $i + 1;
}

$success = $ftp->Disconnect();

?>