3v4l.org

run code in 300+ PHP versions simultaneously
<?php $commands['api_key'] = '789'; $commands['nonce'] = 555; $message = json_encode($commands); print($message); $signature = hash_hmac('sha256', $message, '123'); print($signature);
Output for 5.6.0 - 5.6.25, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
{"api_key":"789","nonce":555}c0a21fbf41349371c297cc78ddcacc9cb7850a21fe70bcd0b7ce7df7789a3519
preferences:
212.8 ms | 404 KiB | 227 Q