Online PHP editor | perf for J78dk

@ 2024-01-17T07:51:42Z

<?php

function merger($array1, $array2) {
    $result = array_merge($array1, $array2);
}

function spreader($array1, $array2) {
    $result = [...$array1, ...$array2];
}

function uniter($array1, $array2) {
    $result = $array1 + $array2;
}

$array1 = [];
$key = 'a';
for ($i = 0; $i < 500; ++$i) {
    $array1[++$key] = $i;
}
$array2 = [];
for ($i = 500; $i < 1000; ++$i) {
    $array2[++$key] = $i;
}

$runs = 1000;
// array_merge in loop
$t0 = microtime(true);
for ($i = 0; $i < $runs; ++$i) {
	merger($array1, $array2);
}
$tMerge = microtime(true);
echo "merge: " . ($tMerge - $t0) . PHP_EOL;

// array_merge with spread operator
$t1 = microtime(true);
for ($i = 0; $i < $runs; ++$i) {
	spreader($array1, $array2);
}
$tSpread = microtime(true);
echo "spread: " . ($tSpread - $t1) . PHP_EOL;

// union operator
$t2 = microtime(true);
for ($i = 0; $i < $runs; ++$i) {
	uniter($array1, $array2);
}
$tUnion = microtime(true);
echo "union: " . ($tUnion - $t2);

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)
8.3.2	0.007	0.020	19.02
8.3.1	0.007	0.018	21.89
8.3.0	0.007	0.023	19.09
8.2.15	0.006	0.022	18.96
8.2.14	0.000	0.026	20.63
8.2.13	0.006	0.022	20.47
8.2.12	0.007	0.022	19.31
8.2.11	0.007	0.020	19.25
8.2.10	0.003	0.026	19.28
8.2.9	0.004	0.025	18.99
8.2.8	0.006	0.022	19.19
8.2.7	0.007	0.025	18.86
8.2.6	0.007	0.022	19.05
8.2.5	0.003	0.025	18.89
8.2.4	0.003	0.026	19.08
8.2.3	0.003	0.024	18.82
8.2.2	0.006	0.023	18.81
8.2.1	0.007	0.022	19.00
8.2.0	0.010	0.019	18.86
8.1.27	0.007	0.021	22.37
8.1.26	0.007	0.020	22.23
8.1.25	0.003	0.028	22.03
8.1.24	0.009	0.019	18.62
8.1.23	0.006	0.025	18.70
8.1.22	0.010	0.023	19.13
8.1.21	0.009	0.018	18.76
8.1.20	0.004	0.022	18.97
8.1.19	0.010	0.023	18.76
8.1.18	0.007	0.023	18.44
8.1.17	0.010	0.019	18.59
8.1.16	0.007	0.023	18.60
8.1.15	0.000	0.027	18.62
8.1.14	0.003	0.026	18.54
8.1.13	0.007	0.021	18.85
8.1.12	0.009	0.019	18.63
8.1.11	0.010	0.016	18.68
8.1.10	0.008	0.019	18.57
8.1.9	0.006	0.022	18.61
8.1.8	0.007	0.021	18.74
8.1.7	0.007	0.020	18.66
8.1.6	0.010	0.017	18.79
8.1.5	0.007	0.023	18.67
8.1.4	0.003	0.023	18.80
8.1.3	0.004	0.025	18.86
8.1.2	0.007	0.020	18.90
8.1.1	0.006	0.022	18.86
8.1.0	0.007	0.021	18.70

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