- microtime: documentation ( source)
<?php
$time=microtime(1);
for ($i=0;$i<100000;$i++)
new stdClass;
echo microtime(1)-$time,': new stdClass'."\n";
$time=microtime(1);
for ($i=0;$i<100000;$i++)
(object)[];
echo microtime(1)-$time,': (object)[]'."\n";