What are the potential memory implications of creating multiple objects versus reusing a single object for handling events in a PHP project, and how can these be optimized?

Creating multiple objects for handling events in a PHP project can lead to increased memory usage as each object will consume memory space. To optimize this, consider reusing a single object for handling events whenever possible. This can be achieved by implementing a singleton design pattern where only one instance of the object is created and reused throughout the project.

class EventHandler {
    private static $instance;

    private function __construct() {
        // private constructor to prevent instantiation
    }

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

        return self::$instance;
    }

    // Add event handling methods here
}

// Example of getting the singleton instance
$eventHandler = EventHandler::getInstance();