php: Code Igniter, get code from controller's public methods

get_code.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Get_code extends CI_Controller
{
    public function __construct()
    {
        parent::__construct();
    }

    public function index()
    {
        $dir = preg_replace("/\/paneles\/get_code.php$/", '', __FILE__);
        $dir .= "/modulo/";
        $controllers = scandir($dir);
        
        foreach($controllers as $c)
        {
            if(preg_match("/\.php$/", $c))
            {
                $filename = "{$dir}{$c}";
                $cn = preg_replace("/\.php/", '', $c);
                $cn = ucfirst($cn);
                require_once($filename);
                
                $class = new ReflectionClass($cn);
                $methods = $class->getMethods(ReflectionMethod::IS_PUBLIC);
                
                $tmp = array();
                foreach($methods as $method)
                {
                    $tmp[] = $method->name;   
                }
                $methods = $tmp;

                foreach($methods as $method)
                {
                    $func = new ReflectionMethod($cn, $method);
                    
                    $f = $func->getFileName();
                    $start_line = $func->getStartLine() - 1;
                    $end_line = $func->getEndLine();
                    $length = $end_line - $start_line;
                    
                    $source = file($f);
                    $source = implode('', array_slice($source, 0, count($source)));
                    $source = preg_split("/(\n|\r\n|\r)/", $source);

                    $body = '';
                    for($i=$start_line; $i<$end_line; $i++)
                        $body.="{$source[$i]}\n";

                    if(preg_match("/\/modulos\//", $body))
                    {
                        echo "filename: {$filename}\n";
                        echo "class: {$cn}\n";
                        echo "method: {$method}\n";
/*                        
                        echo "Start: {$start_line}\n";
                        echo "End: {$end_line}\n";
*/
                        echo "code: \n";
                        echo $body;
                        echo "\n--------------------------------------------------------------------------------------------------------\n";
                    }
                }
            }
        } 
    }

}