PHP依赖注入

$_SESSION['language'] = 'fr';
$user_language = $_SESSION['language'];

class SessionStorage
{
function __construct($cookieName = 'PHP_SESS_ID')
{
session_name($cookieName);
session_start();
}

function set($key, $value)
{
$_SESSION[$key] = $value;
}

function get($key)
{
return $_SESSION[$key];
}

// ...
}

class User
{
protected $storage;

function __construct()
{
$this->storage = new SessionStorage();
}

function setLanguage($language)
{
$this->storage->set('language', $language);
}

function getLanguage()
{
return $this->storage->get('language');
}

// ...
}

$user = new User();
$user->setLanguage('fr');
$user_language = $user->getLanguage();

class User
{
function __construct()
{
$this->storage = new SessionStorage('SESSION_ID');
}
// ...
}

class User
{
function __construct()
{
$t
4000
his->storage = new SessionStorage(STORAGE_SESSION_NAME);
}

// ...
}
define('STORAGE_SESSION_NAME', 'SESSION_ID');

class User
{
function __construct($sessionName)
{
$this->storage = new SessionStorage($sessionName);
}

// ...
}

$user = new User('SESSION_ID');

class User
{
function __construct($storageOptions)
{
$this->storage = new SessionStorage($storageOptions['session_name']);
}

// ...
}
$user = new User(array('session_name' => 'SESSION_ID'));

class User
{
function __construct($storage)
{
$this->storage = $storage;
}

// ...
}

$storage = new SessionStorage('SESSION_ID');
$user = new User($storage);