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<?php $input = [ 'a', ['b', 'c'], 'd', ['e'], ['f', 'g'], ['h', 'i', ['j', ['k'], ['l', 'm', ['n']]]], 'o', 'p', ['q', 'r'], ['s', ['t', ['u', ['v']]]], 'w', 'x', 'y', 'z']; class TraversableInput implements \IteratorAggregate { public $input = [ 'a', ['b', 'c'], 'd', ['e'], ['f', 'g'], ['h', 'i', ['j', ['k'], ['l', 'm', ['n']]]], 'o', 'p', ['q', 'r'], ['s', ['t', ['u', ['v']]]], 'w', 'x', 'y', 'z']; function getIterator() { return new ArrayIterator($this->input); } } $input = new TraversableInput(); function flatten1($input) { return \array_reduce( (array) $input, function ($carry, $item) { return \is_array($item) ? \array_merge($carry, flatten1($item)) : \array_merge($carry, [$item]); }, [] ); } function flatten2($input) { $stack = [$input]; $result = []; while (!empty($stack)) { $item = array_shift($stack); if (is_array($item) || $item instanceof Traversable) { foreach ($item as $element) { array_unshift($stack, $element); } } else { array_unshift($result, $item); } } return $result; } $start = microtime(TRUE); for($x=0;$x<10000;$x++){ flatten1($input); }; $end = microtime(TRUE); $diff = $end-$start; $sec = intval($diff); $micro = $diff - $sec; $final = strftime('%T', mktime(0, 0, $sec)) . str_replace('0.', '.', sprintf('%.10f', $micro)); echo "Flatten1: " . $final . "\n"; $start = microtime(TRUE); for($x=0;$x<10000;$x++){ flatten2($input); }; $end = microtime(TRUE); $diff = $end-$start; $sec = intval($diff); $micro = $diff - $sec; $final = strftime('%T', mktime(0, 0, $sec)) . str_replace('0.', '.', sprintf('%.10f', $micro)); echo "Flatten2: " . $final . "\n";
Output for 7.3.1
Flatten1: 00:00:00.1218681335 Flatten2: 00:00:00.1676180363
Output for 7.3.0
Flatten1: 00:00:00.1382639408 Flatten2: 00:00:00.1592721939
Output for 7.2.13
Flatten1: 00:00:00.1412570477 Flatten2: 00:00:00.1796867847
Output for 7.2.12
Flatten1: 00:00:00.1461391449 Flatten2: 00:00:00.1815979481
Output for 7.2.11
Flatten1: 00:00:00.1329901218 Flatten2: 00:00:00.1693010330
Output for 7.2.10
Flatten1: 00:00:00.1722719669 Flatten2: 00:00:00.1955020428
Output for 7.2.9
Flatten1: 00:00:00.2071330547 Flatten2: 00:00:00.1891889572
Output for 7.2.8
Flatten1: 00:00:00.1478579044 Flatten2: 00:00:00.1829779148
Output for 7.2.7
Flatten1: 00:00:00.1408050060 Flatten2: 00:00:00.2027568817
Output for 7.2.6
Flatten1: 00:00:00.1707170010 Flatten2: 00:00:00.1753058434
Output for 7.2.5
Flatten1: 00:00:00.1542778015 Flatten2: 00:00:00.1860589981
Output for 7.2.4
Flatten1: 00:00:00.1825890541 Flatten2: 00:00:00.1728758812
Output for 7.2.3
Flatten1: 00:00:00.1771650314 Flatten2: 00:00:00.1878070831
Output for 7.2.2
Flatten1: 00:00:00.1753709316 Flatten2: 00:00:00.1685929298
Output for 7.2.1
Flatten1: 00:00:00.1567478180 Flatten2: 00:00:00.1930580139
Output for 7.2.0
Flatten1: 00:00:00.1504859924 Flatten2: 00:00:00.1810131073
Output for 7.1.25
Flatten1: 00:00:00.2051239014 Flatten2: 00:00:00.2696809769
Output for 7.1.22
Flatten1: 00:00:00.1586589813 Flatten2: 00:00:00.3447279930
Output for 7.1.21
Flatten1: 00:00:00.1460139751 Flatten2: 00:00:00.2691249847
Output for 7.1.20
Flatten1: 00:00:00.1599559784 Flatten2: 00:00:00.2017300129
Output for 7.1.19
Flatten1: 00:00:00.1527910233 Flatten2: 00:00:00.1880810261
Output for 7.1.18
Flatten1: 00:00:00.1468329430 Flatten2: 00:00:00.1969552040
Output for 7.1.17
Flatten1: 00:00:00.2356338501 Flatten2: 00:00:00.2896909714
Output for 7.1.16
Flatten1: 00:00:00.2399458885 Flatten2: 00:00:00.2960639000
Output for 7.1.15
Flatten1: 00:00:00.1567201614 Flatten2: 00:00:00.2318921089
Output for 7.1.14
Flatten1: 00:00:00.2174091339 Flatten2: 00:00:00.2360801697
Output for 7.1.13
Flatten1: 00:00:00.1826190948 Flatten2: 00:00:00.2681879997
Output for 7.1.12
Flatten1: 00:00:00.2307820320 Flatten2: 00:00:00.3108010292
Output for 7.1.11
Flatten1: 00:00:00.1987218857 Flatten2: 00:00:00.2965950966
Output for 7.1.10
Flatten1: 00:00:00.1968760490 Flatten2: 00:00:00.3138840199
Output for 7.1.9
Flatten1: 00:00:00.1739509106 Flatten2: 00:00:00.2451181412
Output for 7.1.8
Flatten1: 00:00:00.1630239487 Flatten2: 00:00:00.2373518944
Output for 7.1.7
Flatten1: 00:00:00.1659259796 Flatten2: 00:00:00.2366809845
Output for 7.1.6
Flatten1: 00:00:00.2369258404 Flatten2: 00:00:00.2135608196
Output for 7.1.5
Flatten1: 00:00:00.1625330448 Flatten2: 00:00:00.2725410461
Output for 7.1.4
Flatten1: 00:00:00.1962909698 Flatten2: 00:00:00.2313749790
Output for 7.1.3
Flatten1: 00:00:00.1777579784 Flatten2: 00:00:00.2720499039
Output for 7.1.2
Flatten1: 00:00:00.2041718960 Flatten2: 00:00:00.2751619816
Output for 7.1.1
Flatten1: 00:00:00.2252819538 Flatten2: 00:00:00.3047490120
Output for 7.1.0
Flatten1: 00:00:00.1390779018 Flatten2: 00:00:00.2198760509
preferences:
46.59 ms | 460 KiB | 5 Q