3v4l.org

run code in 300+ PHP versions simultaneously
<?php // ------- INPUT DATA PART --------- $secured_server_seed = ''; // Input the server seed if you want to validate it $server_seed = ''; $client_seed = ''; $nonce = 0; $roll = 0; // ------- INPUT DATA PART END --------- if (!empty($secured_server_seed)) { $hash_seed = hash('sha256', $server_seed); echo "Server seed: " . (strtolower($secured_server_seed) === strtolower($hash_seed) ? 'valid' : 'invalid') . "\n"; } $game_hash = hash_hmac('sha512', $server_seed, $client_seed . '-' . $nonce); $roll_game = 1 + hexdec(substr($game_hash, 0, 7)) % 10000000; echo "Roll value for \"$nonce\" nonce: $roll_game\n"; echo "Roll is " . ($roll_game === $roll ? 'valid' : 'invalid') . "\n";
based on qCMZ9
Output for 5.1.2 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.28, 7.4.0 - 7.4.16, 8.0.0 - 8.0.3
Roll value for "0" nonce: 1764552 Roll is invalid
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.1
Fatal error: Call to undefined function hash_hmac() in /in/KZ7sD on line 13
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: hash_hmac() in /in/KZ7sD on line 13
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: hash_hmac() in /in/KZ7sD on line 13
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: hash_hmac() in /in/KZ7sD on line 13