Singleton framework

authy-wp.php

+<?php
+/*
+ * Plugin Name: Authy for WordPress
+ * Plugin URI: http://www.ethitter.com/plugins/authy-for-wordpress/
+ * Description: Add <a href="http://www.authy.com/">Authy</a> two-factor authentication to WordPress.
+ * Author: Erick Hitter
+ * Version: 0.1
+ * Author URI: http://www.ethitter.com/
+ * License: GPL2+
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+class Authy_WP {
+	/**
+	 * Class variables
+	 */
+	// Oh look, a singleton
+	private static $__instance = null;
+
+	/**
+	 * Singleton implementation
+	 *
+	 * @uses this::setup
+	 * @return object
+	 */
+	public static function instance() {
+		if ( ! is_a( self::$__instance, 'Authy_WP' ) ) {
+			self::$__instance = new Authy_WP;
+			self::$__instance->setup();
+		}
+
+		return self::$__instance;
+	}
+
+	/**
+	 * Silence is golden.
+	 */
+	private function __construct() {}
+
+	/**
+	 *
+	 */
+	private function setup() {}
+}
+
+Authy_WP::instance();
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