Online PHP editor | perf for Ym9KBm

@ 2026-08-02T19:18:31Z

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

$unhashedServerSeed = 'JJtIyuRvwSVJS9PyU0KJ3VRN3GQAxI8tDRe0M7g7unaTsIohquMo8FgtCLVwSW4y';
$nonce = 40;
$clientSeed = 'I2ApzlvbpQJBO88E4wDcTxLVusE6pQKe';
$ticketQuantity = 1000000;

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

if ($unhashedServerSeed == '' || $nonce < 0 || $clientSeed == '' || $ticketQuantity <= 0) {
    echo "Fill in details";
    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	0.022	0.006	17.09
8.5.8	0.026	0.010	16.81
8.5.7	0.017	0.006	17.15
8.5.6	0.021	0.007	16.75
8.5.5	0.027	0.009	16.75
8.5.4	0.033	0.005	16.82
8.5.3	0.025	0.007	17.19
8.5.2	0.023	0.006	17.00
8.5.1	0.029	0.007	16.65
8.5.0	0.010	0.009	16.93
8.4.24	0.005	0.005	19.87
8.4.23	0.014	0.006	19.63
8.4.22	0.017	0.012	19.80
8.4.21	0.025	0.009	19.91
8.4.20	0.023	0.004	19.61
8.4.19	0.013	0.007	19.84
8.4.18	0.016	0.005	19.72
8.4.17	0.021	0.005	20.06
8.4.16	0.019	0.001	19.81
8.4.15	0.017	0.005	19.96
8.4.14	0.014	0.004	17.82
8.4.13	0.017	0.003	17.77
8.4.12	0.016	0.005	17.87
8.4.11	0.016	0.007	18.16
8.4.10	0.013	0.006	18.03
8.4.9	0.019	0.007	17.89
8.4.8	0.024	0.007	17.82
8.4.7	0.023	0.005	17.87
8.4.6	0.023	0.005	18.00
8.4.5	0.024	0.010	17.96
8.4.4	0.018	0.006	17.99
8.4.3	0.017	0.006	18.16
8.4.2	0.014	0.006	18.04
8.4.1	0.017	0.005	17.85
8.3.33	0.027	0.007	18.41
8.3.32	0.017	0.000	18.66
8.3.31	0.017	0.003	18.63
8.3.30	0.015	0.005	18.45
8.3.29	0.014	0.010	18.39
8.3.28	0.017	0.002	18.47
8.3.27	0.021	0.004	16.79
8.3.26	0.016	0.003	16.91
8.3.25	0.019	0.002	16.90
8.3.24	0.016	0.004	16.80
8.3.23	0.017	0.003	16.73
8.3.22	0.013	0.006	16.93
8.3.21	0.020	0.008	17.02
8.3.20	0.017	0.003	16.95
8.3.19	0.016	0.003	17.00
8.3.18	0.015	0.004	16.76
8.3.17	0.018	0.005	16.70
8.3.16	0.017	0.004	17.02
8.3.15	0.015	0.005	16.77
8.3.14	0.019	0.001	16.92
8.3.13	0.014	0.003	16.61
8.3.12	0.011	0.006	16.94
8.3.11	0.013	0.005	16.92
8.3.10	0.022	0.003	17.07
8.3.9	0.026	0.007	17.01
8.3.8	0.031	0.007	16.80
8.3.7	0.024	0.003	17.14
8.3.6	0.033	0.002	16.86
8.3.5	0.028	0.008	16.85
8.3.4	0.033	0.007	18.23
8.3.3	0.028	0.008	18.22
8.3.2	0.025	0.006	18.12
8.3.1	0.014	0.007	18.30
8.3.0	0.028	0.008	18.20
8.2.33	0.021	0.006	18.08
8.2.32	0.012	0.006	18.12
8.2.31	0.013	0.006	18.11

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