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<?php abstract class Singleton { protected static $instance = null; /** * make contrutor not public */ protected function __construct() { } /** * @return static */ public static function getInstance() { if (static::$instance === null) { static::$instance = new static(); } return static::$instance; } } class ExampleSingleton extends Singleton { public $name = 'x'; } $s = ExampleSingleton::getInstance(); echo $s->name; $s->name = 'y'; echo ExampleSingleton::getInstance()->name;
Output for git.master, git.master_jit, rfc.property-hooks
xy

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