Online PHP editor | perf for 4Hc5H

@ 2026-08-09T11:17:01Z

<?php
/*
* Fill in all four below and click the blue 'eval();' button.
* ------------------ */

$unhashedServerSeed = '';
$nonce = -1;
$clientSeed = '';
$ticketQuantity = -1;

/* ------------------ */

if ($unhashedServerSeed == '' || $nonce < 0 || $clientSeed == '' || $ticketQuantity <= 0) {
    echo "bce2e1376976a5c312e94fe9a8f3bcfbbce2e1376976a5c312e94fe9a8f3bcfb";
    return;
}

define('MAX_HEX_SEGMENTS', 6);
define('HEX_SEGMENT_SIZE', 2);
define('BASE_FOR_HEX_CONVERSION', 256);
define('HASH_TYPE', 'sha256');

function calculateDecimalValue(string $preResult): float
{
    $decimalValue = 0;
    for ($i = 0; $i < MAX_HEX_SEGMENTS; $i++) {
        $hexValue = substr($preResult, HEX_SEGMENT_SIZE * $i, HEX_SEGMENT_SIZE);
        $decimalValue += hexdec($hexValue) / pow(BASE_FOR_HEX_CONVERSION, $i + 1);
    }
    return $decimalValue;
}

function getProvablyFairResult(string $init, string $serverSeed, int $qty): array
{
    $preResult = hash_hmac(HASH_TYPE, $init, $serverSeed);
    $decimalValue = calculateDecimalValue($preResult);
    $result = (int) ($decimalValue * $qty) + 1;
    return [
        'preResult' => $preResult,
        'result' => $result,
    ];
}

$unhashedServerSeed = preg_replace( "/\r|\n/", "", $unhashedServerSeed);
$clientSeed = preg_replace( "/\r|\n/", "", $clientSeed);
$nrand = strlen($clientSeed);
$stringToHash = "$clientSeed-$nrand-$nonce";

$result = getProvablyFairResult($stringToHash, $unhashedServerSeed, $ticketQuantity);

echo "Result: {$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)
8.5.9	0.030	0.011	16.77
8.5.8	0.039	0.007	16.53
8.5.7	0.033	0.006	16.63
8.5.6	0.037	0.005	16.55
8.5.5	0.033	0.008	16.32
8.5.4	0.032	0.007	16.35
8.5.3	0.033	0.007	16.88
8.5.2	0.034	0.007	16.64
8.5.1	0.037	0.010	16.64
8.5.0	0.011	0.005	16.76
8.4.24	0.026	0.011	19.28
8.4.23	0.029	0.013	19.64
8.4.22	0.030	0.012	19.34
8.4.21	0.035	0.007	19.46
8.4.20	0.032	0.008	19.46
8.4.19	0.033	0.010	19.42
8.4.18	0.030	0.012	19.35
8.4.17	0.033	0.009	19.61
8.4.16	0.031	0.010	19.35
8.4.15	0.024	0.012	19.67
8.4.14	0.031	0.010	17.60
8.4.13	0.032	0.011	17.65
8.4.12	0.033	0.009	17.79
8.4.11	0.036	0.009	17.79
8.4.10	0.035	0.010	17.88
8.4.9	0.034	0.010	17.76
8.4.8	0.035	0.009	17.81
8.4.7	0.035	0.008	17.86
8.4.6	0.017	0.007	17.85
8.4.5	0.024	0.005	17.71
8.4.4	0.033	0.010	17.85
8.4.3	0.023	0.004	17.64
8.4.2	0.015	0.004	17.70
8.4.1	0.024	0.009	17.48
8.3.33	0.035	0.008	18.14
8.3.32	0.034	0.009	18.25
8.3.31	0.031	0.010	18.16
8.3.30	0.032	0.009	18.39
8.3.29	0.031	0.009	18.26
8.3.28	0.027	0.014	17.91
8.3.27	0.033	0.010	16.69
8.3.26	0.033	0.005	16.57
8.3.25	0.032	0.010	16.73
8.3.24	0.039	0.005	16.45
8.3.23	0.030	0.011	16.58
8.3.22	0.034	0.009	16.68
8.3.21	0.037	0.007	16.59
8.3.20	0.029	0.011	16.82
8.3.19	0.032	0.006	16.50
8.3.18	0.034	0.006	16.60
8.3.17	0.035	0.011	16.41
8.3.16	0.039	0.005	16.80
8.3.15	0.022	0.005	16.59
8.3.14	0.036	0.010	16.71
8.3.13	0.023	0.008	16.59
8.3.12	0.028	0.008	16.77
8.3.11	0.029	0.009	16.65
8.3.10	0.032	0.010	16.65
8.3.9	0.037	0.008	16.64
8.3.8	0.033	0.007	16.58
8.3.7	0.033	0.008	16.41
8.3.6	0.032	0.010	16.70
8.3.5	0.039	0.006	16.54
8.3.4	0.038	0.007	17.72
8.3.3	0.030	0.004	17.82
8.3.2	0.034	0.004	17.57
8.3.1	0.030	0.008	17.96
8.3.0	0.025	0.007	17.89
8.2.33	0.042	0.013	17.83
8.2.32	0.035	0.011	17.92
8.2.31	0.032	0.008	17.96

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