Online PHP editor | refs for rJhob

<?php function probe($label, $times, $callback) { $mem = memory_get_usage(); $start = microtime(true); $array = $callback($times); $time = microtime(true) - $start; $mem = sprintf('%.3f', (memory_get_usage() - $mem) / 1024 / 1024); return "$label: $time s, $mem MB"; } $times = 100000; $run1 = probe('String key', $times, function ($times) { $a = []; while ($times-- > 0) { $a["pagemanagement" . "#" . "staticblocktype" . "#" . $times . "#" . 1] = "test " . $times; } return $a; }); $run2 = probe('CRC32 key', $times, function ($times) { $a = []; while ($times-- > 0) { $a[crc32("pagemanagement" . "#" . "staticblocktype" . "#" . $times . "#" . 1)] = "test " . $times; } return $a; }); $run3 = probe('MD5 key', $times, function ($times) { $a = []; while ($times-- > 0) { $a[md5("pagemanagement" . "#" . "staticblocktype" . "#" . $times . "#" . 1)] = "test " . $times; } return $a; }); $run4 = probe('SHA1 key', $times, function ($times) { $a = []; while ($times-- > 0) { $a[sha1("pagemanagement" . "#" . "staticblocktype" . "#" . $times . "#" . 1)] = "test " . $times; } return $a; }); echo join("<br/>\n", [ $run1, $run2, $run3, $run4, ]);