sns.php

require 'vendor/autoload.php';

use Aws\Sns\Validator\SnsValidator;

$incomingMessage = json_decode($HTTP_RAW_POST_DATA);


try {
    // Case 1:
    // Full auto pilot mode (this detects the strategy based on the 'Type' property of the incoming message
    $validator = new SnsValidator($incomingMessage);

    // Case 2:
    // Injecting the strategy by hand
    $strategy = new Validator\Strategy\NotificationStrategy();
    $validator = new SnsValidator($incomingMessage, $strategy);

    // Case 3a:
    // Specifying the strategy via a constructor string
    $validator = new SnsValidator($incomingMessage, 'Notification');

    // Case 3b:
    // Specifying the strategy via a constructor string straight from the incoming data
    $validator = new SnsValidator($incomingMessage, $incomingMessage->Type);

    if ($validator->validate()) {
        echo "Signature is valid\n";
    } else {
        echo "Signature is invalid";
    }

} catch (Exception $e) {
    echo $e->getMessage();
}