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<?php class Singleton { private function __construct(){} private function __clone(){} private function __sleep(){} private function __wakeup(){} private static $instance; public static function getInstance() { if ( ! self::$instance) { self::$instance = new static(); } return self::$instance; } } $obj1 = Singleton::getInstance(); $obj2 = Singleton::getInstance(); var_dump(spl_object_hash($obj1) == spl_object_hash($obj2));
Output for git.master, git.master_jit, rfc.property-hooks
Warning: The magic method Singleton::__sleep() must have public visibility in /in/YiZol on line 7 Warning: The magic method Singleton::__wakeup() must have public visibility in /in/YiZol on line 8 bool(true)

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