Does PHP have automatic built-in diagnostic page logging like that built into Ruby on Rails? (as opposed to log4j-type logging libraries)
<p>That shows:</p>

<ol>
<li>page execution time duration</li>
<li>query string and form parameters</li>
<li>SQL activity</li>
</ol>

<p>For a <em>behind the scenes</em> look at page execution?</p>
