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<?php trait Singleton { protected static $instance; final public static function getInstance() { static $instance; if (!isset(static::$instance)) { static::$instance = new static; } return static::$instance; } } abstract class Abudabia { use Singleton; } class a1 extends Abudabia { public function set() { return 'allah ahbar'; } } class a2 extends Abudabia { public function get() { return 'algazira'; } } $a = a1::getInstance(); $b = a2::getInstance(); var_dump($a, $a->set(),$b);
Output for git.master, git.master_jit, rfc.property-hooks
object(a1)#1 (0) { } string(11) "allah ahbar" object(a1)#1 (0) { }

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