Online PHP editor | perf for as3v7Y

@ 2025-06-24T06:36:26Z

<?php
$timezoneUtc       = new DateTimeZone('UTC');
$timezoneBerlin    = new DateTimeZone('Europe/Berlin');
$timezoneAmsterdam = new DateTimeZone('Europe/Amsterdam');
$dateTimeA         = new DateTimeImmutable('2025-03-30 00:00:00', $timezoneUtc);
$dateTimeB         = new DateTimeImmutable('2025-03-31 00:00:00', $timezoneUtc);
$dateTimeC         = new DateTimeImmutable('2025-03-29 00:00:00', $timezoneBerlin);
$dateTimeD         = new DateTimeImmutable('2025-03-31 00:00:00', $timezoneBerlin);
$dateTimeE         = new DateTimeImmutable('2025-03-29 00:00:00', $timezoneAmsterdam);
$dateTimeF         = new DateTimeImmutable('2025-03-31 00:00:00', $timezoneAmsterdam);

function toIntervalSpecification(DateInterval $interval): string
{
    $specification  = 'P';
    $specification .= $interval->y ? $interval->y . 'Y' : '';
    $specification .= $interval->m ? $interval->m . 'M' : '';
    $specification .= $interval->d ? $interval->d . 'D' : '';

    if ($interval->h ?? $interval->i ?? $interval->s ?? 0) {
        $specification .= 'T';
        $specification .= $interval->h ? $interval->h . 'H' : '';
        $specification .= $interval->i ? $interval->i . 'M' : '';
        $specification .= $interval->s ? $interval->s . 'S' : '';
    }

    if ($specification[-1] === 'P') {
        $specification = 'PT0S';
    }

    return $specification;
}

$diffTwoTimezoneSameDstRulesA = $dateTimeC->diff($dateTimeF, true);
$diffTwoTimezoneSameDstRulesB = $dateTimeF->diff($dateTimeC, true);
$diffTwoTimezoneSameDstRulesC = $dateTimeE->diff($dateTimeD, true);
$diffTwoTimezoneSameDstRulesD = $dateTimeD->diff($dateTimeE, true);

echo toIntervalSpecification($diffTwoTimezoneSameDstRulesA) . PHP_EOL;
echo toIntervalSpecification($diffTwoTimezoneSameDstRulesB) . PHP_EOL;
echo toIntervalSpecification($diffTwoTimezoneSameDstRulesC) . PHP_EOL;
echo toIntervalSpecification($diffTwoTimezoneSameDstRulesD) . PHP_EOL;

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	0.014	0.006	20.32
8.4.11	0.009	0.011	18.68
8.4.10	0.011	0.010	17.89
8.4.9	0.012	0.009	17.98
8.4.8	0.029	0.010	19.72
8.4.7	0.020	0.011	19.75
8.4.6	0.021	0.003	17.66
8.4.5	0.038	0.007	17.58
8.4.4	0.020	0.004	17.80
8.4.3	0.045	0.010	17.77
8.4.2	0.039	0.009	17.91
8.4.1	0.032	0.005	17.64
8.3.25	0.004	0.005	17.54
8.3.24	0.005	0.005	16.88
8.3.23	0.011	0.009	16.67
8.3.22	0.008	0.004	16.97
8.3.21	0.011	0.003	16.97
8.3.20	0.019	0.003	16.97
8.3.19	0.019	0.003	16.97
8.3.18	0.017	0.005	16.97
8.3.17	0.020	0.007	16.97
8.3.16	0.022	0.003	16.97
8.3.15	0.034	0.009	16.97
8.3.14	0.020	0.003	16.97
8.3.13	0.018	0.002	16.97
8.3.12	0.017	0.003	16.97
8.3.11	0.028	0.006	16.97
8.3.10	0.046	0.011	16.97
8.3.9	0.038	0.010	16.97
8.3.8	0.043	0.008	16.97
8.3.7	0.026	0.005	16.97
8.3.6	0.020	0.007	16.97
8.3.5	0.017	0.006	16.97
8.3.4	0.014	0.007	17.98
8.3.3	0.015	0.004	17.55
8.3.2	0.038	0.007	17.89
8.3.1	0.033	0.007	17.46
8.3.0	0.022	0.009	17.91
8.2.29	0.015	0.004	18.71
8.2.28	0.023	0.008	16.97
8.2.27	0.036	0.007	16.97
8.2.26	0.043	0.011	16.97
8.2.25	0.032	0.011	16.97
8.2.24	0.036	0.008	16.97
8.2.23	0.033	0.011	16.97
8.2.22	0.039	0.005	16.97
8.2.21	0.033	0.010	16.97
8.2.20	0.036	0.006	16.97
8.2.19	0.034	0.009	16.97
8.2.18	0.032	0.010	16.97
8.2.17	0.044	0.006	17.82
8.2.16	0.036	0.009	17.93
8.2.15	0.035	0.006	17.82
8.2.14	0.040	0.011	17.57
8.2.13	0.024	0.006	17.70
8.2.12	0.016	0.008	17.35
8.2.11	0.021	0.009	17.76
8.2.10	0.022	0.008	17.78
8.2.9	0.021	0.007	17.77
8.2.8	0.017	0.004	17.82
8.2.7	0.030	0.005	17.79
8.2.6	0.024	0.004	17.62
8.2.5	0.034	0.010	17.70
8.2.4	0.036	0.007	17.86
8.2.3	0.038	0.007	17.75
8.2.2	0.033	0.009	17.76
8.2.1	0.032	0.010	17.55
8.2.0	0.039	0.008	17.64

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