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=====================
ClassLoader loads your project classes automatically if they follow some
standard PHP conventions.
The Universal ClassLoader is able to autoload classes that implement the PSR-0
standard or the PEAR naming convention.
First, register the autoloader:
require_once __DIR__.'/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
use Symfony\Component\ClassLoader\UniversalClassLoader;
$loader = new UniversalClassLoader();
$loader->register();
Then, register some namespaces with the `registerNamespace()` method:
$loader->registerNamespace('Symfony', __DIR__.'/src');
$loader->registerNamespace('Monolog', __DIR__.'/vendor/monolog/src');
The `registerNamespace()` method takes a namespace prefix and a path where to
look for the classes as arguments.
You can also register a sub-namespaces:
$loader->registerNamespace('Doctrine\\Common', __DIR__.'/vendor/doctrine-common/lib');
The order of registration is significant and the first registered namespace
takes precedence over later registered one.
You can also register more than one path for a given namespace:
$loader->registerNamespace('Symfony', array(__DIR__.'/src', __DIR__.'/symfony/src'));
Alternatively, you can use the `registerNamespaces()` method to register more
than one namespace at once:
$loader->registerNamespaces(array(
'Symfony' => array(__DIR__.'/src', __DIR__.'/symfony/src'),
'Doctrine\\Common' => __DIR__.'/vendor/doctrine-common/lib',
'Doctrine' => __DIR__.'/vendor/doctrine/lib',
'Monolog' => __DIR__.'/vendor/monolog/src',
));
For better performance, you can use the APC based version of the universal
class loader:
require_once __DIR__.'/src/Symfony/Component/ClassLoader/UniversalClassLoader.php';
require_once __DIR__.'/src/Symfony/Component/ClassLoader/ApcUniversalClassLoader.php';
use Symfony\Component\ClassLoader\ApcUniversalClassLoader;
$loader = new ApcUniversalClassLoader('apc.prefix.');
Furthermore, the component provides tools to aggregate classes into a single
file, which is especially useful to improve performance on servers that do not
provide byte caches.
Resources
---------
You can run the unit tests with the following command:
$ cd path/to/Symfony/Component/ClassLoader/
$ composer.phar install
$ phpunit
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