- microtime: documentation ( source)
<?php
$cases = array(false, 0, 1, 2, 3, 4, 5, true, null);
$cnt = count($cases);
$ln = 1111111;
$s = microtime(true);
for ($i = 0; $i < $ln; $i++) {
$result = array();
foreach ($cases as $c) {
$result[] = !!$c;
}
}