- microtime: documentation ( source)
<?php
function test($x) { return $x; }
$t = microtime(1);
for ($i = 1e7; $i--;)
strlen("");
print "strlen: ".(microtime(1) - $t)."\n";
$t = microtime(1);
for ($i = 1e7; $i--;)
test("");
print "userdefiniert: ".(microtime(1) - $t)."\n";