以下为单例模式代码：
复制代码 代码如下:
class Easyframework_Easy_Mysql{
protected static $_instance = null;
private function __construct(){
}
public static function getInstance(){
if (self::$_instance === null){
self::$_instance = new self();
}
return self::$_instance;
}
protected function __clone(){
}
}
$x = Easyframework_Easy_Mysql::getInstance();
var_dump($x);
?>
