PHP optimization - include() or not
<p>I have two optimization question about the function include.</p>

<ol>
<li><p>Is it better to use a single php file and include it or use several little files and include them? Which one will be faster?</p></li>
<li><p>For example, I use a PHP file with <code>mysql_connect</code> and all the db connection stuff. Then I include it when I need it. But will it be faster to just write the code when I need it and not include anything?</p></li>
</ol>

<p>Also if someone has the actual numbers, I will be a nice plus.</p>
