Online PHP editor | perf for 8YRRt

@ 2025-09-07T16:34:45Z

<?php

$pool = [
    1703 => 15916.19738,
    5129 => 11799.15419,
    33   => 11173.49945,
    1914 => 8439.45987,
    2291 => 6284.22271,
    5134 => 5963.14065,
    5509 => 5169.85755,
    4355 => 5153.80867,
    2078 => 3932.79341,
    31   => 3924.09928,
    5433 => 2718.7711,
    3172 => 2146.1932,
    1896 => 2141.36021,
    759  => 1453.5501,
    2045 => 1320.74681,
    5873 => 1222.7448,
    2044 => 1194.4903,
    6479 => 1074.1714,
    5299 => 950.872,
    3315 => 878.06602,
    6193 => 847.3372,
    1874 => 813.816,
    1482 => 330.6422,
    6395 => 312.1545,
    6265 => 165.9224,
    6311 => 122.8785,
    6288 => 26.5426,
];

function balanceTeams(array $pool, int $maxTrades = 10): array
{
    arsort($pool);
    $teams = [[], []];
    $i = 1;
    foreach ($pool as $k => $v) {
        $teams[$i = 1 - $i][$k] = $v;
    }

    $getDiff = fn($a, $b) => array_sum($a) - array_sum($b);

    for ($i = 0; $i < $maxTrades; ++$i) {
        $diff = $getDiff(...$teams);
        //echo "Diff: $diff\n";
        if (!$diff) {
            break;
        }

        foreach ($teams[0] as $idA => $valA) {
            foreach ($teams[1] as $idB => $valB) {
                if (abs($valA - $valB) < abs($diff)) {
                    $teams[0][$idB] = $valB;
                    $teams[1][$idA] = $valA;
                    unset($teams[0][$idA], $teams[1][$idB]);
                    arsort($teams[0]);
                    arsort($teams[1]);
                    //printf("Trade %d: %s for %s\n", $i + 1, $idA, $idB);
                    continue 3;
                }
            }
        }
        break;
    }

    return $teams;
}

$teams = balanceTeams($pool);
var_export($teams);

printf(
    "Summary:\nAverage: %f\nTeam1 Sum: %f\nTeam2 Sum: %f",
    array_sum($pool) / 2,
    array_sum($teams[0]),
    array_sum($teams[1])
);

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)
8.4.12	0.041	0.011	17.54
8.4.11	0.039	0.006	17.84
8.4.10	0.033	0.008	17.90
8.4.9	0.031	0.011	17.63
8.4.8	0.024	0.004	17.82
8.4.7	0.041	0.010	17.77
8.4.6	0.043	0.007	17.57
8.4.5	0.042	0.009	17.76
8.4.4	0.044	0.009	17.55
8.4.3	0.044	0.008	17.36
8.4.2	0.046	0.009	17.16
8.4.1	0.045	0.012	17.63
8.3.25	0.037	0.014	16.54
8.3.24	0.023	0.004	16.85
8.3.23	0.034	0.008	16.52
8.3.22	0.037	0.009	16.61
8.3.21	0.040	0.007	16.21
8.3.20	0.040	0.008	16.48
8.3.19	0.041	0.013	16.31
8.3.18	0.032	0.008	16.45
8.3.17	0.020	0.004	16.57
8.3.16	0.019	0.004	16.57
8.3.15	0.037	0.003	16.66
8.3.14	0.018	0.006	16.53
8.3.13	0.020	0.004	16.16
8.3.12	0.019	0.009	16.54
8.3.11	0.019	0.007	16.40
8.3.10	0.023	0.006	16.32
8.3.9	0.034	0.006	16.53
8.3.8	0.024	0.004	16.52
8.3.7	0.042	0.006	16.27
8.3.6	0.044	0.009	16.60
8.3.5	0.028	0.008	16.39
8.3.4	0.040	0.010	17.55
8.3.3	0.036	0.003	17.43
8.3.2	0.040	0.006	17.48
8.3.1	0.025	0.003	17.50
8.3.0	0.009	0.003	17.61
8.2.29	0.013	0.004	16.62
8.2.28	0.031	0.009	16.59
8.2.27	0.034	0.009	16.78
8.2.26	0.033	0.005	16.33
8.2.25	0.027	0.008	16.64
8.2.24	0.013	0.006	16.33
8.2.23	0.028	0.006	16.51
8.2.22	0.013	0.008	16.86
8.2.21	0.017	0.004	16.77
8.2.20	0.015	0.004	16.38
8.2.19	0.026	0.005	16.76
8.2.18	0.014	0.005	16.36
8.2.17	0.019	0.005	17.70
8.2.16	0.013	0.006	17.68
8.2.15	0.023	0.005	17.52
8.2.14	0.033	0.010	17.50
8.2.13	0.037	0.008	17.75
8.2.12	0.030	0.009	17.51
8.2.11	0.033	0.011	17.64
8.2.10	0.038	0.006	17.44
8.2.9	0.039	0.005	17.70
8.2.8	0.033	0.010	17.67
8.2.7	0.039	0.009	17.02
8.2.6	0.034	0.006	17.53
8.2.5	0.016	0.005	17.57
8.2.4	0.044	0.005	17.43
8.2.3	0.017	0.005	17.49
8.2.2	0.015	0.004	17.36
8.2.1	0.014	0.005	17.56
8.2.0	0.016	0.004	17.66

preferences:dark modelive previewkey bindings