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<?php
/**
* Abstract singleton representing an admin page.
*/
abstract class WPCF_Page_Abstract {
/**
* Singleton parent.
*
* @link http://stackoverflow.com/questions/3126130/extending-singletons-in-php
* @return WPCF_Page_Abstract Instance of calling class.
*/
public static function get_instance() {
static $instances = array();
$called_class = get_called_class();
if( !isset( $instances[ $called_class ] ) ) {
$instances[ $called_class ] = new $called_class();
}
return $instances[ $called_class ];
}
protected function __construct() { }
final private function __clone() { }
}