- microtime: documentation ( source)
<?php
$rounds = 10000000;
$voll = "inhalt";
$leer = "";
//$unset
$start = microtime(true);
for ($i = 0; $i < $rounds; ++$i) {
empty($voll);
empty($leer);
}
echo "Took me ".(microtime(true) - $start). "seconds";
$start = microtime(true);
for ($i = 0; $i < $rounds; ++$i) {
$voll === "";
$leer === "";
}
echo "Took me ".(microtime(true) - $start). "seconds";