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[READ-ONLY] Subtree split of the Symfony ClassLoader Component -- clone into Symfony/Component/ (master at symfony/symfony)
PHP

Merge branch '2.7'

* 2.7:
  [PhpUnitBridge] new bridge for testing with PHPUnit
  [FrameworkBundle] Check if templating is enabled.
  [Filesystem] Improve exception message for copy method
  [FrameworkBundle] Made ServerParams a service
  [2.7] [FrameworkBundle] bugfix in configuration for assets
  [FrameworkBundle] Enable assets by default.
  [Form] OptionsResolver 3.0 is not BC anymore
  [TwigBundle] add missing asset dependency
  Add an auto_alias compiler pass

Conflicts:
	.travis.yml
	composer.json
	src/Symfony/Bridge/Doctrine/composer.json
	src/Symfony/Bridge/Monolog/composer.json
	src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler.php
	src/Symfony/Bridge/ProxyManager/composer.json
	src/Symfony/Bridge/Swiftmailer/composer.json
	src/Symfony/Bridge/Twig/composer.json
	src/Symfony/Bundle/DebugBundle/composer.json
	src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
	src/Symfony/Bundle/FrameworkBundle/composer.json
	src/Symfony/Bundle/SecurityBundle/composer.json
	src/Symfony/Bundle/TwigBundle/composer.json
	src/Symfony/Bundle/WebProfilerBundle/composer.json
	src/Symfony/Component/BrowserKit/composer.json
	src/Symfony/Component/ClassLoader/composer.json
	src/Symfony/Component/Console/composer.json
	src/Symfony/Component/Debug/composer.json
	src/Symfony/Component/DependencyInjection/composer.json
	src/Symfony/Component/DomCrawler/composer.json
	src/Symfony/Component/EventDispatcher/composer.json
	src/Symfony/Component/Form/composer.json
	src/Symfony/Component/HttpFoundation/composer.json
	src/Symfony/Component/HttpKernel/composer.json
	src/Symfony/Component/Intl/composer.json
	src/Symfony/Component/Routing/composer.json
	src/Symfony/Component/Security/Core/composer.json
	src/Symfony/Component/Security/Csrf/composer.json
	src/Symfony/Component/Security/Http/composer.json
	src/Symfony/Component/Security/composer.json
	src/Symfony/Component/Serializer/composer.json
	src/Symfony/Component/Translation/composer.json
	src/Symfony/Component/Validator/composer.json

README.md

ClassLoader Component

ClassLoader loads your project classes automatically if they follow some standard PHP conventions.

The ClassLoader object 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/ClassLoader.php';

use Symfony\Component\ClassLoader\ClassLoader;

$loader = new ClassLoader();
$loader->register();

Then, register some namespaces with the addPrefix() method:

$loader->addPrefix('Symfony', __DIR__.'/src');
$loader->addPrefix('Monolog', __DIR__.'/vendor/monolog/src');

The addPrefix() method takes a namespace prefix and a path where to look for the classes as arguments.

You can also register a sub-namespaces:

$loader->addPrefix('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->addPrefix('Symfony', array(__DIR__.'/src', __DIR__.'/symfony/src'));

Alternatively, you can use the addPrefixes() method to register more than one namespace at once:

$loader->addPrefixes(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 class loader:

require_once __DIR__.'/src/Symfony/Component/ClassLoader/ClassLoader.php';
require_once __DIR__.'/src/Symfony/Component/ClassLoader/ApcClassLoader.php';

use Symfony\Component\ClassLoader\ClassLoader;
use Symfony\Component\ClassLoader\ApcClassLoader;

$loader = new ClassLoader();
$loader->addPrefix('Symfony', __DIR__.'/src');

$loader = new ApcClassLoader('apc.prefix.', $loader);
$loader->register();

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 install
$ phpunit
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