How can I find unused functions in a PHP project
<p>How can I find unused functions in a PHP project?</p>

<p>Are there features or API's built into PHP that will allow me to analyse my codebase - for example <a href="http://ie.php.net/manual/en/language.oop5.reflection.php">Reflection</a>, <a href="http://php.net/manual/en/function.token-get-all.php"><code>token_get_all()</code></a>?</p>

<p>Are these API's feature rich enough for me not to have to rely on a third party tool to perform this type of analysis?</p>
