<?php

    // read file as string
    $data = file_get_contents("func.php");

    // tokenize
    $tokens = token_get_all($data);

    // iterate tokens
    $_f = false;
    $methods = array();
    foreach ($tokens as $token) {
        $token_name = token_name((int)$token[0]);
        if ("T_FUNCTION" == $token_name) {
            $_f = true;
        }
        if ("T_STRING" == $token_name && true == $_f) {
            $methods[] = $token[1];
            $_f = false;
        }
    }

    // output
    echo "<pre>".print_r($methods, true)."</pre>";

?>