在PHP中,要实现高效的封装,可以通过以下几个步骤:
namespace MyNamespace;
class MyClass
{
// ...
}
interface MyInterface
{
public function myMethod();
}
class MyClass implements MyInterface
{
public function myMethod()
{
// ...
}
}
class MyClass
{
private $myProperty;
private function myPrivateMethod()
{
// ...
}
}
class MyClass
{
private $data = array();
public function __set($name, $value)
{
$this->data[$name] = $value;
}
public function __get($name)
{
if (array_key_exists($name, $this->data)) {
return $this->data[$name];
}
return null;
}
}
interface MyRepository
{
public function find($id);
}
class MyClass
{
private $repository;
public function __construct(MyRepository $repository)
{
$this->repository = $repository;
}
public function doSomething()
{
$item = $this->repository->find($id);
// ...
}
}
class Singleton
{
private static $instance;
private function __construct()
{
// ...
}
public static function getInstance()
{
if (null === self::$instance) {
self::$instance = new Singleton();
}
return self::$instance;
}
}
通过以上方法,可以实现PHP代码的高效封装,提高代码的可读性、可维护性和可扩展性。