Online PHP editor | rfc for pGCPE

@ 2024-05-08T17:36:50Z

<?php

//                                           //
//   EmpireDrop Provably Fair Case Battles   //
//                                           //

/*
* Fill in all three below and click the blue 'eval();' button.
 ------------------ */
$server_seed = '';
$client_seed = '';
$nonce = $roundNumber = 0;
/* ------------------ */


if ($server_seed == '' || $client_seed == '' || $nonce < 0) {
    echo "Fill in details";
    return;
}

define('MIN_RESULT', 0.00001);
define('MAX_RESULT', 100);
define('CONVERT_RATE', 100000);
define('HASH_TYPE', 'sha256');

function getProvablyFairResult(string $client_seed, string $server_seed, int $nounce)
{
    $hash = hash_hmac(HASH_TYPE, "{$client_seed}-{$nounce}", $server_seed);
    $normalized = hexdec($hash) / (16 ** strlen($hash));
    $roll = MIN_RESULT + $normalized * (MAX_RESULT - MIN_RESULT);
    
    return convertDecimalValue($roll);
}


function convertDecimalValue(float $value): int
{
    return round($value * CONVERT_RATE);
}

$result = getProvablyFairResult($client_seed, $server_seed, $nonce);

echo "Result: {$result}";

Output for git.master_jit, git.master, rfc.property-hooks: Fill in details

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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