Usage

Whenever you reference a class that has not been required or included yet, PHP uses the autoloading mechanism to delegate the loading of a file defining the class. Symfony provides two autoloaders, which are able to load your classes:

• The PSR-0 Class Loader: loads classes that follow the PSR-0 class naming standard;
• MapClassLoader: loads classes using a static map from class name to file path.

Additionally, the Symfony ClassLoader component ships with a set of wrapper classes which can be used to add additional functionality on top of existing autoloaders:

• Cache a Class Loader
• Debugging a Class Loader

Installation

You can install the component in 2 different ways:

• Install it via Composer (symfony/class-loader on Packagist);
• Use the official Git repository (https://github.com/symfony/class-loader).

Then, require the vendor/autoload.php file to enable the autoloading mechanism provided by Composer. Otherwise, your application won't be able to find the classes of this Symfony component.