Online PHP editor | perf for QS7uH

@ 2013-10-29T14:17:44Z

<?php


function test() {}
 
$nIter = 1000000;
$argNums = [0, 1, 2, 3, 4, 5, 100];
 
$func = 'test';
 
foreach ($argNums as $argNum) {
    $args = $argNum == 0 ? [] : array_fill(0, $argNum, null);
 
    $startTime = microtime(true);
    for ($i = 0; $i < $nIter; ++$i) {
        call_user_func_array($func, $args);
    }
    $endTime = microtime(true);
    echo "cufa   with $argNum args took ", $endTime - $startTime, "\n";
 
    $startTime = microtime(true);
    for ($i = 0; $i < $nIter; ++$i) {
        switch (count($args)) {
            case 0: $func(); break;
            case 1: $func($args[0]); break;
            case 2: $func($args[0], $args[1]); break;
            case 3: $func($args[0], $args[1], $args[2]); break;
            case 4: $func($args[0], $args[1], $args[2], $args[3]); break;
            case 5: $func($args[0], $args[1], $args[2], $args[3], $args[4]); break;
            default: call_user_func_array($func, $args); break;
        }
    }
    $endTime = microtime(true);
    echo "switch with $argNum args took ", $endTime - $startTime, "\n";
 
    $startTime = microtime(true);
    for ($i = 0; $i < $nIter; ++$i) {
        $func(...$args);
    }
    $endTime = microtime(true);
    echo "unpack with $argNum args took ", $endTime - $startTime, "\n";
}

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)
5.4.21	0.027	0.037	18.88
5.4.20	0.023	0.043	19.13
5.4.19	0.027	0.040	19.18
5.4.18	0.023	0.077	19.14
5.4.17	0.027	0.077	19.23
5.4.16	0.027	0.067	18.97
5.4.15	0.027	0.070	19.04
5.4.14	0.040	0.077	16.52
5.4.13	0.017	0.043	16.41
5.4.12	0.023	0.033	16.41
5.4.11	0.017	0.037	16.32
5.4.10	0.010	0.050	16.57
5.4.9	0.020	0.047	16.38
5.4.8	0.030	0.053	16.34
5.4.7	0.023	0.070	16.26
5.4.6	0.030	0.057	16.33
5.4.5	0.033	0.053	16.51
5.4.4	0.023	0.033	16.40
5.4.3	0.010	0.043	16.42
5.4.2	0.027	0.067	16.37
5.4.1	0.017	0.057	16.51
5.4.0	0.030	0.043	15.97
5.3.27	0.030	0.067	15.40
5.3.26	0.017	0.053	15.40
5.3.25	0.023	0.070	15.40
5.3.24	0.030	0.063	15.40
5.3.23	0.017	0.047	15.40
5.3.22	0.023	0.070	15.40
5.3.21	0.020	0.043	15.40
5.3.20	0.017	0.037	15.40
5.3.19	0.020	0.077	15.40
5.3.18	0.017	0.050	15.40
5.3.17	0.030	0.063	15.40
5.3.16	0.017	0.053	15.40
5.3.15	0.017	0.050	15.40
5.3.14	0.020	0.047	15.40
5.3.13	0.027	0.070	15.40
5.3.12	0.030	0.063	15.40
5.3.11	0.023	0.067	15.40
5.3.10	0.020	0.050	15.40
5.3.9	0.027	0.060	15.40
5.3.8	0.023	0.047	15.40
5.3.7	0.023	0.043	15.40
5.3.6	0.027	0.067	15.40
5.3.5	0.027	0.063	15.40
5.3.4	0.030	0.067	15.40
5.3.3	0.033	0.050	15.40
5.3.2	0.020	0.033	15.40
5.3.1	0.013	0.037	15.40
5.3.0	0.017	0.033	15.40

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