Symfony\Component\ClassLoader\ApcUniversalClassLoader

ApcUniversalClassLoader implements a "universal" autoloader cached in APC for PHP 5.3.

It is able to load classes that use either:

* The technical interoperability standards for PHP 5.3 namespaces and
class names (https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md);

* The PEAR naming convention for classes (http://pear.php.net/).

Classes from a sub-namespace or a sub-hierarchy of PEAR classes can be
looked for in a list of locations to ease the vendoring of a sub-set of
classes for large projects.

Example usage:

require 'vendor/symfony/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
require 'vendor/symfony/src/Symfony/Component/ClassLoader/ApcUniversalClassLoader.php';

use Symfony\Component\ClassLoader\ApcUniversalClassLoader;

$loader = new ApcUniversalClassLoader('apc.prefix.');

// register classes with namespaces
$loader->registerNamespaces(array(
'Symfony\Component' => __DIR__.'/component',
'Symfony' => __DIR__.'/framework',
'Sensio' => array(__DIR__.'/src', __DIR__.'/vendor'),
));

// register a library using the PEAR naming convention
$loader->registerPrefixes(array(
'Swift_' => __DIR__.'/Swift',
));

// activate the autoloader
$loader->register();

In this example, if you try to use a class in the Symfony\Component
namespace or one of its children (Symfony\Component\Console for instance),
the autoloader will first look for the class under the component/
directory, and it will then fallback to the framework/ directory if not
found before giving up.