Zend Guard Decoder
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Decode legacy Zend Guard-encoded PHP files. Free preview, no install.

10,000+ files decoded · 99.9% success rate · Free preview available

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functions.php
Encrypted
1<?php @Zend;24802;3if(!extension_loaded('Zend Optimizer')&&4!extension_loaded('Zend Guard Loader')){5  die('The file '.__FILE__.' was encoded6by the Zend Guard. The Zend Optimizer or7Zend Guard Loader must be installed to8run this file.');9}10?>11xW9kQmVMOHl2c2RLbEd3T3F6QW5jK2R512bkxtVnBSaGpFYUZiSWNVdE94QXNnZUhr13YlBmdEp3UWl6WG9WcU1kTnJTeUxnY0F614c2VIa2JQZnRKd1FpelhvVnFNZE5yU3lM
functions_decoded.php
Decoded
1<?php23function invoice_settings($v1 = null) {4    if ($v1 === null) {5        return get_option("acme_invoice");6    }7    return get_option("acme_invoice")[$v1];8}910function invoice_log($v1 = null, $v2 = "info") {11    $v3 = new Acme_Invoice_Log();12    $v3->write($v2, $v1);13    return $v3;14}1516function invoice_load_textdomain() {17    load_plugin_textdomain("acme-invoices", __DIR__);18    return;19}
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Upload any Zend Guard-encoded PHP file and preview the decoded output instantly. No registration required.

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Decode Zend Guard-encoded PHP files online

Zend Guard was Zend Technologies' commercial PHP encoder, used extensively between 2003 and 2015 before being discontinued. Despite being deprecated, huge volumes of enterprise PHP 4.x, 5.x, and early 7.x applications are still encoded with Zend Guard and running in production.

DecodePHP handles Zend Guard files for modernization projects. The output is clean PHP source code ready for migration to modern PHP versions via compatibility tooling.

Typical Zend Guard use cases

  • Legacy enterprise PHP 5.x codebases
  • Early e-commerce platforms (Magento 1.x forks, osCommerce plugins)
  • Commercial CMS plugins from 2005–2015
  • Billing and license-management PHP apps

Zend Guard support

Legacy Zend Guard-encoded PHP 5.x / 7.x files fully handled — the discontinued but still widely deployed protector.

PHP 7.1–8.4

Every PHP version covered: 7.1, 7.2, 7.3, 7.4, 8.1, 8.2, 8.3, and 8.4.

Clean output

Properly formatted, readable code with preserved structure and formatting.

Fast decoding

Most files decoded in under 30 seconds. Optimized for files of any size.

100% online

Nothing to install. Works in any browser, on any device, anywhere.

Instant download

Download decoded files immediately after processing. No waiting.

How it works

Three steps to decoded source

  1. 01

    Upload your file

    Drag and drop your Zend Guard-encoded PHP file or click to browse.

  2. 02

    Preview the output

    See the first 20 lines of decoded code instantly to verify quality.

  3. 03

    Download the full file

    Purchase credits and download the complete decoded source code.

Credit packs

Buy once and decode anytime. Web and API access are included.

Starter

$19

3 credits · $6.33/file

Entry pack for a few one-off files.

  • 3 file credits
  • Web + API access
  • Credits do not expire
  • Zend Guard & PHP 5.x–7.x
  • Successful decodes only
Most Popular

Pro

$59

30 credits · $1.97/file

Best default pack for developers.

  • 30 file credits
  • Web + API access
  • Credits do not expire
  • Zend Guard & PHP 5.x–7.x
  • Successful decodes only

Enterprise

$199

150 credits · $1.33/file

High-volume pack for teams and agencies.

  • 150 file credits
  • Web + API access
  • Credits do not expire
  • Zend Guard & PHP 5.x–7.x
  • Successful decodes only

Custom

Contact us

150+ credits · custom volume

Larger volume, special handling, or custom terms.

  • 150+ file credits
  • Web + API access
  • Custom volume pricing
  • Priority handling options
  • Email support

Secure crypto payments · Bitcoin, Ethereum, Litecoin, Monero, USDT

Frequently asked questions

What is Zend Guard?
Zend Guard was Zend Technologies' commercial PHP encoder, now discontinued. It was widely used between 2003 and 2015 to protect PHP 4.x, 5.x, and early PHP 7 commercial scripts. Files require the Zend Guard Loader (also called Zend Optimizer+) to execute.
Is Zend Guard still used?
Officially discontinued, but thousands of legacy PHP 5.x apps still run in production encoded with Zend Guard — particularly enterprise billing systems, CMS plugins, and early e-commerce platforms.
Can you decode Zend Guard files?
Yes, for the PHP versions Zend Guard supported (PHP 4.x, 5.x, early 7.x). Upload the file and see a free preview.
What's the difference between Zend Guard and IonCube?
Different protectors from different companies. Zend Guard (Zend Technologies) was more enterprise-focused; IonCube (IonCube Ltd) became the more popular choice for commercial scripts. Different loader extensions, different bytecode formats.
Can decoded Zend Guard files be migrated to PHP 8?
Decoding restores PHP 5.x / 7.x source. Migrating to PHP 8 requires compatibility work (Rector, PHPStan). But you can't migrate what you can't read — decode first, then migrate.
Is there a free preview for Zend Guard files?
Yes. First 20 lines of decoded source shown before payment.

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