// Validate (in customer's PHP app - public key) list($data, $signature) = explode('||', base64_decode($licenseKey)); $valid = openssl_verify($data, $signature, $publicKey, OPENSSL_ALGO_SHA256);
### `includes/config.php`
Verdict
?> </code></pre> <h3><code>includes/License.php</code></h3> <pre><code class="language-php"><?php class License private $db;
Use established libraries rather than creating your own encryption method. php license key system github
Do you need assistance setting up ?
return false;
Most license key systems are built around several core components that work together. At the heart of it is the process—creating unique, hard-to-guess keys, often with encoded information about the license type. These keys are then managed in a database , which stores crucial metadata such as status, assigned user, expiration date, and any domain restrictions. The validation endpoint serves as the server-side API that checks a license's validity when a client application makes a request. Finally, the client-side verification code is embedded in the application to perform regular checks, typically at startup or during feature access.
: The server checks the database and returns a signed response. The client caches this validation for a set period. 4. Third-Party Services with PHP Integration // Validate (in customer's PHP app - public
: Store the "last check" date locally to allow the software to run offline for a limited time (e.g., 7 days). 4. Obfuscation (The "Hard Part")
CREATE DATABASE license_key_system; USE license_key_system;
php-license-key-system/ ├── api/ │ ├── generate.php │ ├── validate.php │ └── status.php ├── database/ │ └── license.sql ├── includes/ │ ├── config.php │ └── License.php ├── examples/ │ ├── client-example.php │ └── admin-generate.php └── README.md
Building a PHP license key system involves creating a mechanism to generate unique keys and a server-side API to validate them against specific machine or domain identifiers. Open-source repositories on GitHub provide various frameworks for implementing these systems, ranging from simple key generators to full-scale activation servers. Key Components of a PHP Licensing System A robust system typically consists of three parts: Key Generator At the heart of it is the process—creating
If you need a complete backend to manage users, activations, and expirations, consider these open-source frameworks:
```php <?php define('DB_HOST', 'localhost'); define('DB_NAME', 'license_db'); define('DB_USER', 'root'); define('DB_PASS', ''); define('SECRET_KEY', 'your-strong-secret-key-here'); // used for hashing
There are several ways to improve this system, including: