Online PHP editor | perf for UvnvQ

@ 2015-12-13T00:27:52Z

<?php

//$input = file_get_contents('php://stdin','r');
//$params = explode("\n",$input);
$params = [3,3,60,100]
$probes = shift_array($params);

function silnia($n)
{
    return ($n <= 1) ? 1 : gmp_mul($n, silnia($n-1));
}

function z($silnia)
{
    $strSilnia = (string)$silnia;
    $zeroCount = 0;
    for ($i = strlen($strSilnia)-1; $i >= 0; $i--)
    {
        if ($strSilnia[$i] == 0) $zeroCount += 1;
        else break;
    }
    echo $zeroCount.PHP_EOL; 
}

for ($i = 0; $i < $probes; $i++)
{
    z(silnia($params[$i]))
}

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)
7.0.0	0.003	0.043	20.25
5.6.16	0.003	0.090	20.45
5.6.15	0.010	0.067	18.18
5.6.14	0.010	0.063	18.23
5.6.13	0.003	0.087	18.25
5.6.12	0.007	0.063	20.99
5.6.11	0.017	0.053	20.96
5.6.10	0.013	0.077	21.04
5.6.9	0.003	0.070	21.07
5.6.8	0.007	0.033	20.38
5.5.30	0.003	0.083	17.94
5.5.29	0.013	0.077	17.98
5.5.28	0.007	0.043	20.67
5.5.27	0.000	0.063	20.72
5.5.26	0.017	0.073	20.97
5.5.25	0.007	0.043	20.49
5.5.24	0.010	0.080	20.14

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