Просмотр поста

Delphinum,

abstract class Singleton {
    protected static $instance = null;
    
    public function __construct(){}

    public function __clone(){}

    public function __wakeup(){}
    
    public final static function getInstance() {
        if (null === static::$instance) {
            static::$instance = new static();
        }
        return static::$instance;
    }
}

class A extends Singleton {
    
    
    public function test() {
        echo '<pre>' . print_r($this, 1) . '</pre>';
    }
}

$a = A::getInstance();
$a->test();