Singleton Class

singleton-class.php

<?php

class SFN_Group_WP_Admin extends SFN_Group_Purchase_PMPRO{

	private static $instance;

	/**
	 * Spins up the instance of the plugin so that we don't get many instances running at once
	 *
	 * @since 1.0
	 * @author SFNdesign, Curtis McHale
	 *
	 * @uses $instance->init()                      The main get it running function
	 */
	public static function instance(){

		if ( ! self::$instance ){
			self::$instance = new SFN_Group_WP_Admin();
			self::$instance->init();
		}

	} // instance

	/**
	 * Spins up all the actions/filters in the plugin to really get the engine running
	 *
	 * @since 1.0
	 * @author SFNdesign, Curtis McHale
	 */
	public function init(){

	} // init

}

SFN_Group_WP_Admin::instance();