php cannot redeclare _autoload() - php

Question

I getting more indepth with php and I am creating my own mini mvc framework to learn OOP.
I have a .htaccess file that redirects everything to the index.php. In the index.php I include a file called boootstrap.php to parse the url and load the class php file.
Now that I am adding ActiveRecord http://www.phpactiverecord.org to add database access. I get the error:
Fatal error: Cannot redeclare class AutoLoader in /home/i554246/public_html/mvc/lib/Autoloader.php on line 4
I am not sure how to stop the conflict.
index.php:
include(MVC_CORE_INCLUDE_PATH . DS . 'Bootstrap.php')
include(MVC_CORE_INCLUDE_PATH . DS . 'activerecord/ActiveRecord.php');
autoloader.php which is included in bootstrap.php
<?php
class AutoLoader
{
public static function Load($Class)
{
$File = BASEDIR.$Class.'.php';
if(is_readable($File))
{
require($File);
}
else
{
die('Requested module "'.$Class.'" is missing. Execution stopped.');
}
}
}
spl_autoload_register('AutoLoader::Load');
ActiveRecord.php
if (!defined('PHP_ACTIVERECORD_AUTOLOAD_DISABLE'))
spl_autoload_register('activerecord_autoload',false,PHP_ACTIVERECORD_AUTOLOAD_PREPEND);
function activerecord_autoload($class_name)
{
$path = ActiveRecord\Config::instance()->get_model_directory();
$root = realpath(isset($path) ? $path : '.');
if (($namespaces = ActiveRecord\get_namespaces($class_name)))
{
$class_name = array_pop($namespaces);
$directories = array();
foreach ($namespaces as $directory)
$directories[] = $directory;
$root .= DIRECTORY_SEPARATOR . implode($directories, DIRECTORY_SEPARATOR);
}
$file = "$root/$class_name.php";
if (file_exists($file))
require $file;
}
?>

Answer 1

Perhaps change
if (file_exists($file))
require $file;
to
if (file_exists($file))
require_once($file);

Answer 2

You either try to include a file twice (you might want to use require_once) or you have 2 classes (one from a library you use?) with that same name.
if There seem to be 2 classes called AutoLoader, you might want to look into namespaces. I can't recall phpactiverecord having a class called that, but as you might use several libraries you were bound to run into this.
The best way would be to put your own autoloader class in a namespace. Make sure you keep all your calls correct, so calls to the autoloader should have \yournamespace\ in front of it, and calls inside the autoloader might need prepending a \ to (like \Exception for instance)

Answer 3

PHP-ActiveRecord doesn't have any AutoLoader class. What happens here I guess, is that you have two loaders that are loading the file.
Since it's PSR-0 compliant, you can load it using your own loading utility (assuming it's embracing that convention). If you do so just disable PHP-AR autoloading utility.
define('PHP_ACTIVERECORD_AUTOLOAD_DISABLE', true);
The vanilla loader is moslty useful for finding model classes which won't be needed if you're putting them in their own namespace. As your framework might not follow PHP-AR convention regarding where the models are, it seems correct to disable that autoloader.
Check that example of PHP-AR integration with lithium framework: li3_activerecord

Answer 4

I moved the line
$Bootstrap = new Bootstrap();
under the
include(MVC_CORE_INCLUDE_PATH . DS . 'Bootstrap.php');
include(MVC_CORE_INCLUDE_PATH . DS . 'Controller.php');
but above
require_once 'lib/activerecord/ActiveRecord.php'; the ActiveRecord seemed to want to load it again