Very simple tool for managing class dependencies. Dependency injection is a method of removing hard-coded class dependencies. Instead, the dependencies are injected at run-time, allowing for greater flexibility as dependency implementations may be swapped easily.
Here is a simple example that shows how to register services and parameters:
use IoC\Container;
$c = new Container();
$c->setParameter('cache', array(
'host' => '127.0.0.1',
'port' => 11211,
));
$c->singleton('cache', function (Container $c) {
$cache = new Memcached();
$cache->addServer(
$c->getParameter('cache.host'),
$c->getParameter('cache.port')
);
return $cache;
});
// single instance of Memcached
$value = $c->make('cache');
Resolving a class dependencies:
use IoC\Container;
$c = new Container();
$c->singleton('cache', 'MemcachedCache');
class MemcachedCache extends Cache
{
public function __construct(Memcached $cache)
{
$this->cache = $cache;
}
}
$cache = $c->make('cache');
Resolving a simple class:
use IoC\Container;
$c = new Container();
class FooBar
{
public function __construct(Container $c, Baz $baz)
{
$this->container = $c;
$this->baz = $baz;
}
}
$fooBar = $c->make('FooBar');
Binding an interface to an implementation:
use IoC\Container;
$c = new Container();
$c->bind('UserRepositoryInterface', 'DbUserRepository');
class UserController extends BaseController {
public function __construct(UserRepositoryInterface $users)
{
$this->users = $users;
}
}
$c->make('UserController');
The recommended way to install php-ioc is through Composer. Just create a
composer.json
file and run the php composer.phar install
command to
install it:
{
"require": {
"itlessons/php-ioc": "*"
}
}
Alternatively, you can download the php-ioc.zip file and extract it.
You can run the unit tests with the following command:
$ cd path/to/php-ioc/
$ composer.phar install
$ phpunit
[Принцип Inversion of Control (IoC) в вашем php проекте] (http://www.itlessons.info/php/inversion-of-control/)