(PHP ActiveX) 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 ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Ftp2')
$ftp = new COM("Chilkat.Ftp2");

$ftp->Hostname = 'ftp.example.com';
$ftp->Username = 'login';
$ftp->Password = 'password';

$ftp->KeepSessionLog = 1;

// Connect and login to the FTP server.
$success = $ftp->Connect();
if ($success != 1) {
    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 != 1) {
    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 1.
$mode = 1;
$descendTree = 1;
$previewOnly = 1;
$success = $ftp->SyncRemoteTree2('/temp/abc123',$mode,$descendTree,$previewOnly);
if ($success != 1) {
    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:
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringArray')
$sa = new COM("Chilkat.StringArray");
$sa->LoadFromText($ftp->SyncPreview);

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.FileAccess')
$fac = new COM("Chilkat.FileAccess");

$numFiles = $sa->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 != 1) {
        print 'Failed to delete: ' . $localFilePath . "\n";
    }

    $i = $i + 1;
}

$success = $ftp->Disconnect();

?>