Php License Key System Github ⏰

Inside the PHP app you are selling.

<?php
// In your plugin's bootstrap file
function validateLicense($license_key) 
    $ch = curl_init('https://yourserver.com/api/validate.php');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(['license_key' => $license_key]));
    curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($http_code === 200) 
    $data = json_decode($response, true);
    return $data['valid'] ?? false;
return false;


// Usage
$stored_key = get_option('user_license_key'); // stored by user
if (!validateLicense($stored_key)) 
die("Your license is invalid. Please purchase a license.");
 php license key system github

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At its core, a license key system consists of three main components: Inside the PHP app you are selling

Most robust systems also include:

Repository Focus: david-szabo97/php-license-handler or similar single-file classes. At its core, a license key system consists

Cons: