Online PHP editor | perf for 3hOfJ

@ 2019-04-10T20:03:42Z

<?php

interface BarInterface{}

function getMemoryUsage($size){
    static $unit=['b','kb','mb','gb','tb','pb'];
    return $size > 0 ? @round($size/pow(1024,($i=floor(log($size,1024)))),2).' '.$unit[$i] : 0 . ' byte';
}

class Bar implements BarInterface
{
}

class Foo 
{
    public function variadic(\BarInterface ...$bars){}
    
    public function iterated(array $bars){}
}

$bars = [];
for ($i=0; $i<10000 ;$i++) {
    $bars[] = new \Bar();
}
$foo = new Foo();
$items = \count($bars);
//initial call to reduce overhead
$foo->variadic(...[]);
$foo->iterated([]);
microtime(true);
memory_get_usage(true);

//benchmark start
$mem_start = memory_get_usage(true);
$start = new \DateTime();
$foo->variadic(...$bars);
$mem_variadic = memory_get_usage(true);
$variadic = new \DateTime();
$variadicDiff = $start->diff($variadic)->format('%f');
printf('%sms (variadic passed %d %s increase)', $variadicDiff, $items, getMemoryUsage($mem_variadic-$mem_start));
echo \PHP_EOL . '--------' . \PHP_EOL;

$mem_start = memory_get_usage(true);
$start = new \DateTime();
$foo->iterated($bars);
$mem_iterated = memory_get_usage(true);
$iterated = new \DateTime();
$iteratedDiff = $start->diff($iterated)->format('%f');
printf('%sms (iterated passed %d %s increase)', $iteratedDiff, $items, getMemoryUsage($mem_iterated-$mem_start));
echo \PHP_EOL . '--------' . \PHP_EOL;

if ($variadicDiff > $iteratedDiff) {
    $loser = 'Variadic';
    $diff = $variadicDiff - $iteratedDiff;
    $loss = $diff / $iteratedDiff;
} else {
    $loser = 'Iterated';
    $diff = $iteratedDiff  - $variadicDiff;
    $loss = $diff / $variadicDiff;
}
printf('%s was slower by %.2f%% (%d ms)', $loser, $loss * 100, $diff);

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)
8.1.4	0.009	0.007	19.38
8.0.17	0.010	0.005	18.74
7.4.0	0.007	0.014	16.79
7.3.12	0.007	0.014	16.62
7.3.11	0.006	0.016	16.65
7.3.10	0.006	0.013	16.61
7.3.9	0.005	0.012	16.71
7.3.8	0.011	0.007	16.65
7.3.7	0.010	0.005	16.65
7.3.6	0.005	0.010	16.63
7.3.5	0.006	0.009	16.66
7.3.4	0.009	0.007	16.57
7.3.3	0.005	0.012	16.67
7.3.2	0.011	0.006	18.14
7.3.1	0.007	0.011	18.20
7.3.0	0.009	0.010	18.17
7.2.25	0.009	0.013	17.22
7.2.24	0.012	0.010	17.00
7.2.23	0.003	0.015	17.20
7.2.22	0.006	0.009	17.15
7.2.21	0.008	0.009	16.92
7.2.20	0.010	0.008	17.12
7.2.19	0.010	0.009	17.04
7.2.18	0.004	0.013	17.16
7.2.17	0.007	0.009	16.89
7.2.16	0.010	0.011	17.08
7.2.15	0.006	0.014	18.08
7.2.14	0.012	0.011	18.09
7.2.13	0.008	0.015	18.19
7.2.12	0.012	0.011	17.99
7.2.11	0.044	0.010	18.04
7.2.10	0.010	0.014	18.07
7.2.9	0.013	0.010	18.29
7.2.8	0.015	0.005	17.94
7.2.7	0.009	0.011	18.29
7.2.6	0.013	0.010	18.16
7.2.5	0.010	0.010	18.18
7.2.4	0.008	0.008	18.18
7.2.3	0.008	0.016	17.96
7.2.2	0.012	0.009	18.19
7.2.1	0.008	0.012	18.21
7.2.0	0.009	0.010	18.14
7.1.33	0.006	0.014	18.15
7.1.32	0.002	0.015	18.12
7.1.31	0.010	0.005	18.25
7.1.30	0.005	0.011	18.01
7.1.29	0.006	0.009	18.29
7.1.28	0.012	0.009	17.45
7.1.27	0.010	0.009	17.61
7.1.26	0.011	0.009	17.48
7.1.25	0.013	0.008	17.00
7.1.24	0.011	0.007	18.07
7.1.23	0.013	0.003	18.15
7.1.22	0.006	0.010	18.13
7.1.21	0.006	0.013	18.10
7.1.20	0.010	0.007	17.98
7.1.19	0.007	0.013	18.08
7.1.18	0.006	0.010	18.27
7.1.17	0.003	0.016	17.86
7.1.16	0.006	0.013	18.11
7.1.15	0.009	0.009	18.18
7.1.14	0.009	0.009	18.18
7.1.13	0.007	0.010	18.12
7.1.12	0.011	0.006	17.90
7.1.11	0.011	0.011	18.22
7.1.10	0.006	0.012	18.05
7.1.9	0.006	0.013	18.34
7.1.8	0.003	0.013	18.31
7.1.7	0.003	0.014	17.79
7.1.6	0.003	0.014	18.33
7.1.5	0.009	0.009	18.30
7.1.4	0.007	0.007	18.08
7.1.3	0.000	0.014	18.20
7.1.2	0.003	0.013	18.27
7.1.1	0.000	0.015	18.00
7.1.0	0.010	0.010	17.83

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