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

Merge branch '2.8'

* 2.8: (21 commits)
  Fix merge
  Fix typo
  Various fixes esp. on Windows
  Fix the validation of form resources to register the default theme
  Fix the retrieval of the value with property path when using a loader
  [appveyor] minor enhancements
  [Process] Disable failing tests on Windows
  [Translation] Fix the string casting in the XliffFileLoader
  Windows and Intl fixes
  Add appveyor.yml for C.I. on Windows
  [VarDumper] fixed HtmlDumper to target specific the head tag
  [travis] merge php: nightly and deps=high test-matrix lines
  consistently use str_replace to unify directory separators
  Support omitting the <target> node in an .xlf file.
  Fix the handling of values for multiple choice types
  moved PHP nightly to PHP 7.0
  fixed tests using deprecation features
  [Form] made deprecation notice more precise
  fixed CS
  Fix BC break after split of ACL from core
  ...

Conflicts:
	.travis.yml
	composer.json
	src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
	src/Symfony/Component/Intl/DateFormatter/IntlDateFormatter.php
	src/Symfony/Component/Intl/Tests/DateFormatter/AbstractIntlDateFormatterTest.php
	src/Symfony/Component/Locale/Tests/LocaleTest.php

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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