(PHP ActiveX) Unzip an AES Encrypted Text File directly into a String Variable

A common need is to unzip from an AES encrypted Zip archive directly into a string variable, such that the unencrypted file never resides on disk, even temporarily. This example shows how to do it.

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.Zip')
$zip = new COM("Chilkat.Zip");

// This example opens a WinZip-compatible AES encrypted
// .zip that contains a single file: hamlet.xml.

// It decrypts and unzips hamlet.xml directly into a string
// variable.
$zip->SetPassword('secret');
$success = $zip->OpenZip('qa_data/hamlet.zip');
if ($success != 1) {
    print $zip->LastErrorText . "\n";
    exit;
}

// entry is a Chilkat.ZipEntry
$entry = $zip->GetEntryByName('hamlet.xml');
if ($zip->LastMethodSuccess == 0) {
    print 'Failed to find entry in zip' . "\n";
    exit;
}

// lineEndingBehavior:
// 0 = leave unchanged.
// 1 = convert all to bare LF's
// 2 = convert all to CRLF's
$lineEndingBehavior = 0;
$srcCharset = 'utf-8';
$xmlText = $entry->unzipToString($lineEndingBehavior,$srcCharset);
print $xmlText . "\n";


?>