Inner workings of PHP
<p>I was wondering if there's a decent resource for finding the inner workings of PHP.</p>

<p>I have taken a look at the source, but a decent explanation would really help.</p>

<p>Some example questions I'd like answered.</p>

<p>How does a PHP script get interpreted into machine readable code?</p>

<p>How does it interact with Apache, how does apache collect the HTML response from PHP?</p>

<p>And other questions like that.</p>
