Online PHP editor | perf for AuTSI

@ 2013-11-05T11:12:13Z

<?php
$array = array();
$l = 100000;
for($i = 0; $i< $l; $i++) {
	$array[$i] = md5($i);
}

$copy = $array;
$start = microtime(true);
for($i = 0; $i< $l; $i++) {
    $copy[$i] = $copy[$i] . ' x';
    usleep(1);
}
echo "\nfor:" . (microtime(true) - $start);


$copy = $array;
$start = microtime(true);
foreach ($copy as $i => $item) {
    $copy[$i] = $item . ' x';
    usleep(1);
}
echo "\nforeach (ohne ref):" . (microtime(true) - $start);


$copy = $array;
$start = microtime(true);
foreach ($copy as &$item) {
    $item .= ' x';
    usleep(1);
}
echo "\nforeach (mit ref):" . (microtime(true) - $start);


$copy = $array;
$start = microtime(true);
array_walk($copy, function (&$item, $i) {
    $item .= ' x';
    usleep(1);
});
echo "\narray_walk (mit ref):" . (microtime(true) - $start);


$copy = $array;
$start = microtime(true);
$copy = array_map(function ($item) {
    $item .= ' x';
    usleep(1);
    return $item;
}, $copy);
echo "\narray_map (ohne ref):" . (microtime(true) - $start);

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	0.207	0.337	51.46
5.4.20	0.193	0.323	51.16
5.4.19	0.240	0.323	51.52
5.4.18	0.223	0.377	51.24
5.4.17	0.230	0.350	51.29
5.4.16	0.233	0.303	50.98
5.4.15	0.210	0.333	51.33
5.4.14	0.170	0.387	48.66
5.4.13	0.250	0.300	48.73
5.4.12	0.217	0.357	48.76
5.4.11	0.243	0.343	48.88
5.4.10	0.200	0.367	48.57
5.4.9	0.253	0.303	48.64
5.4.8	0.280	0.263	48.56
5.4.7	0.180	0.357	48.43
5.4.6	0.190	0.330	48.48
5.4.5	0.210	0.330	48.55
5.4.4	0.227	0.367	48.52
5.4.3	0.227	0.337	48.43
5.4.2	0.170	0.360	48.70
5.4.1	0.207	0.360	48.62
5.4.0	0.240	0.327	48.06
5.3.27	0.237	0.420	46.12
5.3.26	0.223	0.370	46.23
5.3.25	0.233	0.350	46.11
5.3.24	0.290	0.327	46.20
5.3.23	0.213	0.383	46.17
5.3.22	0.210	0.410	46.11
5.3.21	0.190	0.420	46.34
5.3.20	0.273	0.323	46.36
5.3.19	0.213	0.370	46.25
5.3.18	0.213	0.377	46.39
5.3.17	0.180	0.360	46.12
5.3.16	0.207	0.350	46.28
5.3.15	0.207	0.367	46.24
5.3.14	0.173	0.423	46.14
5.3.13	0.203	0.383	46.04
5.3.12	0.223	0.300	46.39
5.3.11	0.220	0.380	46.13
5.3.10	0.210	0.363	45.72
5.3.9	0.257	0.330	45.70
5.3.8	0.263	0.350	45.79
5.3.7	0.227	0.367	45.66
5.3.6	0.193	0.377	45.55
5.3.5	0.207	0.373	45.61
5.3.4	0.180	0.393	45.63

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