代碼: 選擇全部
https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.mdMandatory
A fully-qualified namespace and class must have the following structure \<Vendor Name>\(<Namespace>\)*<Class Name>
Each namespace must have a top-level namespace ("Vendor Name").
Each namespace can have as many sub-namespaces as it wishes.
Each namespace separator is converted to a DIRECTORY_SEPARATOR when loading from the file system.
Each _ character in the CLASS NAME is converted to a DIRECTORY_SEPARATOR. The _ character has no special meaning in the namespace.
The fully-qualified namespace and class is suffixed with .php when loading from the file system.
Alphabetic characters in vendor names, namespaces, and class names may be of any combination of lower case and upper case.
Examples
\Doctrine\Common\IsolatedClassLoader => /path/to/project/lib/vendor/Doctrine/Common/IsolatedClassLoader.php
\Symfony\Core\Request => /path/to/project/lib/vendor/Symfony/Core/Request.php
\Zend\Acl => /path/to/project/lib/vendor/Zend/Acl.php
\Zend\Mail\Message => /path/to/project/lib/vendor/Zend/Mail/Message.php
Underscores in Namespaces and Class Names
\namespace\package\Class_Name => /path/to/project/lib/vendor/namespace/package/Class/Name.php
\namespace\package_name\Class_Name => /path/to/project/lib/vendor/namespace/package_name/Class/Name.php
The standards we set here should be the lowest common denominator for painless autoloader interoperability. You can test that you are following these standards by utilizing this sample SplClassLoader implementation which is able to load PHP 5.3 classes.
Example Implementation
Below is an example function to simply demonstrate how the above proposed standards are autoloaded.
<?php
function autoload($className)
{
$className = ltrim($className, '\\');
$fileName = '';
$namespace = '';
if ($lastNsPos = strrpos($className, '\\')) {
$namespace = substr($className, 0, $lastNsPos);
$className = substr($className, $lastNsPos + 1);
$fileName = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
}
$fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
require $fileName;
}
SplClassLoader Implementation
The following gist is a sample SplClassLoader implementation that can load your classes if you follow the autoloader interoperability standards proposed above. It is the current recommended way to load PHP 5.3 classes that follow these standards.
http://gist.github.com/221634