Does PHP have an inherent memory limit, beyond what I set?
<p>Does PHP have a built-in limitation on how much memory it can use? In other words, if I have a machine with many gigs of RAM and change <code>php.ini</code> to allocate most of them, will scripts still hit some lower limit?</p>

<p>(If you're curious, the goal is to run an automatic documentation generator, written in PHP, on a very large PHP code base.)</p>
