Append Dir Tree to Existing Zip w/out Rewriting Entire Zip

Demonstrates how to use the QuickAppend method to append a directory tree to an existing .zip archive. This method works by editing the existing .zip -- it does not rewrite or recompress the contents of the existing .zip. It is the fastest way to append additional files to a pre-existing large .zip archive. Note: The QuickAppend method is new and available in the pre-release downloads, or in official releases dated after 6-October-2007.

Download Chilkat 32-bit Zip ActiveX (.msi) (includes objects for .zip, .gz, .bz2, and .Z)

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

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

<?php

$zip = new COM("Chilkat.Zip2");

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

//  The NewZip method only initializes the Zip object -- it does
//  not create or write a .zip file.
$success = $zip->NewZip('notUsed.zip');
if ($success != true) {
    print $zip->lastErrorText() . "\n";
    exit;
}

//  Add a references to all files in a directory tree.
//  Note: this does not read or compress the file contents --
//  it simply adds file references to the zip object.
$recurse = true;
$success = $zip->AppendFiles('c:/temp/abc123/*',$recurse);
if ($success != true) {
    print $zip->lastErrorText() . "\n";
    exit;
}

//  Appends the contents of the zip object to the preExisting.zip
//  zip archive.  preExisting.zip is opened, and the files
//  referenced by this zip object are streamed in, compressed,
//  and appended to the end of the archive.
$success = $zip->QuickAppend('preExisting.zip');
if ($success != true) {
    print $zip->lastErrorText() . "\n";
    exit;
}

print 'Success!' . "\n";

//  Note: Additional files, directory trees, or in-memory data
//  can be appended by calling AppendOneFileOrDir, AppendFiles,
//  AppendString, AppendData, etc. multiple times.
//  Whatever files and/or in-memory data that are referenced by
//  this zip object will be appended to preExisting.zip when
//  QuickAppend is called.

?>