Marc Towler

I have been working on a little MVC project to assist in my self-learning and I have come across an issue that completely baffled me. I made a blog section in this MVC-ish system and pulled user permissions from an ACL with no problem whatsoever.
I moved onto creating a member section and as soon as i added any permissions checking I get the following error from Chrome:

No data received
Unable to load the web page because the server sent no data.
Here are some suggestions:
Reload this web page later.
Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.

I thought it was weird, so I double checked my error logs and nothing had shown up. So I decided to copy and paste the working blog code into the member file, reloaded and i got the EXACT same error, the only difference between the two files right now is the file name and the class name.
Here is the Blog code:

<?php
class blog extends frontController {
    public $model;
    public $user;

    public function __construct()
    {
        parent::__construct();

        $this->model = $this->autoload_model();
        $this->user  = $this->load_user();
        $this->user->getUserRoles();
    }

    public function index()
    {
        //Will only list the latest post ;)
        if(!$this->user->hasPermission('blog_access'))
        {
            $array = $this->model->list_posts();

            if(empty($array))
            {
                $this->variables(array(
                    'site_title' => 'View Blog Posts',
                    'post_title' => 'Sorry but there are no posts to display'
                ));
            } else {
                $this->variables(array(
                    'site_title' => 'View Blog Posts',
                    'list'       => $array[0],
                    'post_title' => $array[0]['entry_title'],
                    'link'       => str_replace(' ', '_',$array[0]['entry_title']),
                ));
            }
        } else {
            $this->variables(array(
                'site_title' => 'Error :: Design Develop Realize',
                'body'       => 'Sorry, but you do not have permission to access this',
            ));
        }

        $this->parse('blog/list', $this->toParse);
    }

This is the member file:

<?php

class member extends frontController {
    public $model;
    public $user;

    public function __construct()
    {
        parent::__construct();

        $this->model = $this->autoload_model();
        $this->user  = $this->load_user();
        $this->user->getUserRoles();
    }

    public function index()
    {
        //Will only list the latest post ;)
        if(!$this->user->hasPermission('blog_access'))
        {
            //$array = $this->model->list_posts();

            if(empty($array))
            {
                $this->variables(array(
                    'site_title' => 'Design Develop Realize :: View Blog Posts',
                    'post_title' => 'Sorry but there are no posts to display'
                ));
            } else {
                $this->variables(array(
                    'site_title' => 'Design Develop Realize :: View Blog Posts',
                    'list'       => $array[0],
                    'post_title' => $array[0]['entry_title'],
                    'link'       => str_replace(' ', '_',$array[0]['entry_title']),
                ));
            }
        } else {
            $this->variables(array(
                'site_title' => 'Error :: Design Develop Realize',
                'body'       => 'Sorry, but you do not have permission to access this',
            ));
        }

        $this->parse('blog/list', $this->toParse);
    }

In the member class, if I comment out $this->user = $this->load_user(); then the error disappears!!!
Just for reference here is that function:

protected function load_user()
{
    if(!$this->loader->loaded['acl'])
    {
        $this->loader->loadCore('acl');
    }

    return $this->loader->loaded['acl'];
}

Any help or suggestions would be appreciated as I am stumped!

PS yes I do have error reporting set to cover everything and no it does not log anything!

EDIT: Because all files go through index.php I have placed the error reporting there:

<?php
error_reporting(E_ALL);
ini_set('date.timezone', "Europe/London");

require_once('system/library/loader.php');

$loader = new loader();
$loader->loadCore(array('frontController', 'routing'));

EDIT 2: loadCore() is below

public function loadCore($toLoad, $params = false)
{
    //important task first, check if it is more then 1 or not
    if(is_array($toLoad))
    {
        //more then one so lets go to the task!
        foreach($toLoad as $file)
        {
            if(file_exists('system/library/' . $file . '.php'))
            {
                require_once('system/library/' . $file . '.php');

                if($params)
                {
                    $this->loaded[$file] = new $file($params);
                } else {
                    $this->loaded[$file] = new $file;
                }
            } else {
                trigger_error("Core File $file does not exist");
            }
        }
    } else {
        //Phew, less work, it is only one!
        if(file_exists('system/library/' . $toLoad . '.php'))
        {
            require_once('system/library/' . $toLoad . '.php');

            if($params)
            {
                echo(__LINE__); exit;
                $this->loaded[$toLoad] = new $toLoad($params);
            } else {
                $this->loaded[$toLoad] = new $toLoad;
            }
        }
    }
}

Update: I modified loadCore so that if it was the acl being called it would use a try…catch() and that has not helped as it will not display an error just the same chrome and IE pages

Update 2: I have spoken with my host and it seems that everytime this error occurs, apache logs the following (not sure why I cannot see it in my copy of the logs!)

[Wed Feb 22 08:07:11 2012] [error] [client 93.97.245.13] Premature end
of script headers: index.php