Question

What is the code to show how long it took for PHP to process a page?

Also, how many sql queries were performed to generate that page?

Answer 1

For the first question.

$start = microtime(true);
$end = microtime(true);

printf("Page was generated in %f seconds", $end - $start);

The second one is a little more complicated. You need an shared gateways that keeps tracks of all your queries and stores an execution counter.
The most simple example can be a wrapper method around the mysql_query that increments a static variable and then passes the query to mysql_query.

The most part of modern ORM implements that feature, if you already use one of them.