Page Generation Time (your thoughts?)

Is microtime() the best way to calculate the page generation time? Considering there are a lot of DB calls, included files, etc. I was wondering how long it took to build the page. I (basically) did the following... $start=explode(" ", microtime()); <HTML> ...a bunch of DB calls & PHP code & HTML code... </HTML> $finish=explode(" ", microtime()); echo "Page Generated in" . $finish[0]-$start[0] . "seconds"; Is this the best (most accurate) way to do this? All the DB calls, includes, etc. should be completed by the end of the page, right? Thanks, Mario