Online PHP editor | perf for bRN5v

@ 2025-12-22T16:04:53Z

<?php

//                                           //
//     CSDROP 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}";

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.5.3	0.023	0.008	18.06
8.5.2	0.026	0.007	17.17
8.5.1	0.034	0.006	16.69
8.5.0	0.026	0.008	16.58
8.4.18	0.031	0.008	19.63
8.4.17	0.028	0.009	19.91
8.4.16	0.028	0.011	20.43
8.4.15	0.027	0.010	19.63
8.4.14	0.033	0.009	17.42
8.4.13	0.028	0.010	17.50
8.4.12	0.033	0.007	17.65
8.4.11	0.033	0.011	17.65
8.4.10	0.033	0.010	17.74
8.4.9	0.037	0.008	17.62
8.4.8	0.038	0.008	17.66
8.4.7	0.035	0.007	17.85
8.4.6	0.036	0.009	17.62
8.4.5	0.034	0.010	17.67
8.4.4	0.037	0.010	17.41
8.4.3	0.036	0.008	17.64
8.4.2	0.043	0.008	17.51
8.4.1	0.037	0.007	18.11
8.3.30	0.028	0.011	19.16
8.3.29	0.037	0.009	18.35
8.3.28	0.032	0.007	18.24
8.3.27	0.038	0.010	16.69
8.3.26	0.036	0.009	16.64
8.3.25	0.039	0.009	16.66
8.3.24	0.030	0.008	16.75
8.3.23	0.037	0.008	16.69
8.3.22	0.035	0.008	16.66
8.3.21	0.033	0.006	16.68
8.3.20	0.032	0.008	16.65
8.3.19	0.033	0.008	16.68
8.3.18	0.036	0.009	16.65
8.3.17	0.042	0.009	16.79
8.3.16	0.036	0.009	16.63
8.3.15	0.034	0.010	17.13
8.3.14	0.032	0.007	16.63
8.3.13	0.027	0.007	16.74
8.3.12	0.026	0.006	16.76
8.3.11	0.027	0.007	16.68
8.3.10	0.034	0.008	16.77
8.3.9	0.032	0.009	16.57
8.3.8	0.034	0.006	16.63
8.3.7	0.033	0.007	16.70
8.3.6	0.031	0.008	16.60
8.3.5	0.031	0.007	16.64
8.3.4	0.026	0.005	17.91
8.3.3	0.020	0.007	17.72
8.3.2	0.025	0.006	17.82
8.3.1	0.023	0.008	17.81
8.3.0	0.022	0.007	17.79

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