Singleton Pattern

Singleton Pattern

class Logger {
    static function getInstance()
    {
        if (self::$instance == NULL) {
            self::$instance = new Logger();
        }
        return self::$instance;
    }
     private function __construct()
    {
    }
     private function __clone()
    {
 
	        }
     function Log($str)
    {
        // Take care of logging
    }
     static private $instance = NULL;
}
 
Logger::getInstance()->Log("Checkpoint");