3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo $secret = '7pgj8Dm6'; echo "\r\n"; $sec = base64_decode($secret); echo $sec; echo "\r\n"; $message = "Message"; echo hash_hmac('sha512', $message, base64_decode($sec), false);

preferences:
29.62 ms | 402 KiB | 5 Q