- microtime: documentation ( source)
<?php
function test() {}
$t = microtime(1);
for ($i = 1e6; $i--;)
strlen("");
print "strlen: ".(microtime(1) - $t)."\n";
$t = microtime(1);
for ($i = 1e6; $i--;)
test();
print "userdefiniert: ".(microtime(1) - $t)."\n";