Online PHP editor | perf for SCdP9

@ 2024-03-04T17:36:57Z

<?php
//Case Battle Fairness | Round Validation

$serverSeed = '';    // Server seed
$eosBlockSeed = '';  // EOS Block Seed

/*
* This is the round number, where 1 round is one case opened. If the battle has 10 cases,
* this means there are 10 rounds - 1-10.
* IMPORTANT: If it's the tiebreaker round, it will always be totalRounds + 1
* because the tiebreaker is considered as one additional round. If you have 2 cases
* which results in 2 rounds, the tiebreaker roundNumber is 3 because it's total (2) + 1.
*/
$roundNumber = -1;    

/*
* Player position that we want to validate the roll for.
* For example, if you want to validate your own roll and you were holding
* the 3rd position from left to right, then playerPosition will be 3.
*/
$playerPosition = -1;  // The Player Position (1 to 4)


// Update this to true if you are validating a tiebreaker result.
$isTiebreaker = false;

/*
* Case Ticket's Quantity, by default it's 100,000
* We only change this if there's a case that has different ticket distribution.
* Right now, all cases use 100,000 by default.
* IMPORTANT: If it's the tiebreaker round, this will be number of players participating on the tiebreaker.
* For example, if two players are participating on a tiebreaker the ticketQuantity is 2.
*/
$ticketQuantity = 100000; 

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


if ($serverSeed == '' || $eosBlockSeed == '' || $roundNumber < 0 || $playerPosition < 1 || $playerPosition > 4 || $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, int $qty): array
{
    $preResult = hash(HASH_TYPE, $init);
    $decimalValue = calculateDecimalValue($preResult);
    $result = (int) ($decimalValue * $qty) + 1;
    return [
        'preResult' => $preResult,
        'result' => $result,
    ];
}

$serverSeed = preg_replace("/\r|\n/", "", $serverSeed);
$eosBlockSeed = preg_replace("/\r|\n/", "", $eosBlockSeed);
if ($isTiebreaker) {
    $stringToHash = "$serverSeed-$eosBlockSeed-$roundNumber";
} else {
    $stringToHash = "$serverSeed-$eosBlockSeed-$roundNumber-$playerPosition";
}

$result = getProvablyFairResult($stringToHash, $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)
8.4.13	0.013	0.007	17.96
8.4.12	0.008	0.006	24.16
8.4.11	0.024	0.007	18.33
8.4.10	0.030	0.007	18.13
8.4.9	0.027	0.007	18.06
8.4.8	0.027	0.008	18.06
8.4.7	0.030	0.008	17.99
8.4.6	0.030	0.008	17.74
8.4.5	0.031	0.008	17.78
8.4.4	0.030	0.008	17.66
8.4.3	0.036	0.007	17.66
8.4.2	0.029	0.009	17.53
8.4.1	0.030	0.006	17.62
8.3.25	0.015	0.005	16.67
8.3.24	0.020	0.007	17.49
8.3.23	0.028	0.007	16.35
8.3.22	0.022	0.006	16.88
8.3.21	0.027	0.008	16.62
8.3.20	0.026	0.006	16.45
8.3.19	0.024	0.006	16.81
8.3.18	0.022	0.005	16.70
8.3.17	0.028	0.007	16.71
8.3.16	0.030	0.006	16.65
8.3.15	0.028	0.008	16.62
8.3.14	0.028	0.007	16.66
8.3.13	0.025	0.005	16.53
8.3.12	0.025	0.006	16.74
8.3.11	0.022	0.005	16.83
8.3.10	0.026	0.007	16.62
8.3.9	0.028	0.006	17.46
8.3.8	0.027	0.007	16.70
8.3.7	0.029	0.006	16.63
8.3.6	0.026	0.006	16.67
8.3.5	0.026	0.005	16.64
8.3.4	0.026	0.007	18.04
8.3.3	0.022	0.006	17.89
8.3.2	0.023	0.007	18.11
8.3.1	0.024	0.007	18.19
8.3.0	0.020	0.008	17.92
8.2.29	0.025	0.005	17.23
8.2.28	0.024	0.006	17.17
8.2.27	0.028	0.007	16.50
8.2.26	0.026	0.007	16.44
8.2.25	0.024	0.007	16.67
8.2.24	0.022	0.006	16.64
8.2.23	0.024	0.007	17.00
8.2.22	0.022	0.007	17.04
8.2.21	0.022	0.007	17.25
8.2.20	0.022	0.006	16.65
8.2.19	0.026	0.007	16.54
8.2.18	0.025	0.008	16.48
8.2.17	0.030	0.007	18.17
8.2.16	0.028	0.008	18.09
8.2.15	0.027	0.008	18.03
8.2.14	0.027	0.008	18.08
8.2.13	0.024	0.006	18.06
8.2.12	0.027	0.005	18.06
8.2.11	0.025	0.007	18.06
8.2.10	0.026	0.008	17.99
8.2.9	0.027	0.008	18.09
8.2.8	0.026	0.006	17.99
8.2.7	0.025	0.006	17.91
8.2.6	0.024	0.007	18.05
8.2.5	0.026	0.007	17.97
8.2.4	0.028	0.008	17.94
8.2.3	0.024	0.006	17.91
8.2.2	0.023	0.007	17.93
8.2.1	0.022	0.007	17.95
8.2.0	0.025	0.007	17.94
8.1.33	0.024	0.007	17.05
8.1.32	0.026	0.009	16.10
8.1.31	0.024	0.008	16.11
8.1.30	0.025	0.006	16.32
8.1.29	0.023	0.009	17.34
8.1.28	0.026	0.007	17.01
8.1.27	0.024	0.006	18.13
8.1.26	0.021	0.008	18.11
8.1.25	0.024	0.006	18.12
8.1.24	0.022	0.007	17.82
8.1.23	0.020	0.006	17.85
8.1.22	0.022	0.007	17.75
8.1.21	0.024	0.007	17.68
8.1.20	0.025	0.006	17.69
8.1.19	0.020	0.007	17.72
8.1.18	0.024	0.008	17.66
8.1.17	0.023	0.005	17.71
8.1.16	0.024	0.007	17.75
8.1.15	0.020	0.007	17.83
8.1.14	0.024	0.006	17.75
8.1.13	0.022	0.008	17.82
8.1.12	0.025	0.007	17.84
8.1.11	0.024	0.008	17.79
8.1.10	0.023	0.007	17.89
8.1.9	0.022	0.006	17.77
8.1.8	0.022	0.007	17.81
8.1.7	0.023	0.007	17.78
8.1.6	0.026	0.005	17.91
8.1.5	0.023	0.006	17.87
8.1.4	0.023	0.007	17.87
8.1.3	0.023	0.008	17.94
8.1.2	0.025	0.008	17.98
8.1.1	0.024	0.007	17.79
8.1.0	0.023	0.008	17.68

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