codemis/Aura.Autoload

A PSR-0 compliant autoloader

Aura Autoload

The Aura Autoload package provides a PSR-0 compliant SPL autoloader implementation for PHP. It also matches the interface proposed at https://wiki.php.net/rfc/splclassloader.

This package is compliant with PSR-0, PSR-1, and PSR-2. If you notice compliance oversights, please send a patch via pull request.

Include-Path Usage

Create an instance of the Loader and register it with SPL.

<?php
$loader = require '/path/to/Aura.Autoload/scripts/instance.php';
$loader->register();

The Loader will now look for PSR-0 compliant class names in the include-path, and throw an Exception\NotDeclared if it cannot find one.

Class Prefix Usage

You can tell the Loader to search particular paths for classes with specific prefixes. The prefixes can be the older PEAR-style class prefixes, or the newer PHP 5.3 formal namespace prefixes.

<?php
// look for all Vendor_* classes in this path:
$loader->add('Vendor_', '/path/to/lib');

// look for Vendor\Package classes in this path:
$loader->add('Vendor\Package\\', '/path/to/Vendor.Package/src');

// additionally, e.g. in testing modes, also look for Vendor\Package
// classes in this path as well:
$loader->add('Vendor\Package\\', '/path/to/Vendor.Package/tests');

(Note that you should end formal namespace prefixes with a double-backslash, not a single backslash.)

If the Loader cannot find a class in the explicit paths for the specific prefix given, it will fall back to looking in the include-path.

Note that the path should point to the top of a PSR-0 compliant directory structure. For example, this ...

<?php
$loader->add('Vendor\Package\\', '/path/to/Vendor.Package/src');

... assumes a directory structure like this:

Vendor.Package/
    src/
        Vendor/
            Package/
                Class.php

You can also set all paths at once as an array.

<?php
$loader->setPaths([
    'Aura\Router\\' => '/path/to/project/Aura.Router/src/',
    'Aura\Di\\'     => '/path/to/project/Aura.Di/src/',
]);

Exact Class Usage

You can tell the Loader where a specific individual class is located using the setClass() method.

<?php
// look for the VendorClassName at this location:
$loader->setClass('VendorClassName', '/path/to/VendorClassName.php');

This allows you to build relatively fast lookup maps of class names to file names.

You can also set all classes at once using the setClasses() method:

<?php
$loader->setClasses([
    'Vendor\Package\Foo' => '/path/to/Vendor/Package/Foo.php',
    'Vendor\Package\Bar' => '/path/to/Vendor/Package/Bar.php',
    'Vendor\Package\Zim' => '/path/to/Vendor/Package/Zim.php',
]);