class db { 
 public static $counter = 0; 
 protected static $instance = null; 
  
 public function __construct() {} 
 public function __clone(){} 
  
 public static function instance() 
 { 
 if (self::$instance === null) 
 { 
 $opt = array( 
 PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, 
 PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC, 
 PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES UTF8', 
 PDO::ATTR_EMULATE_PREPARES => FALSE,); 
 try { 
 $dsn = 'mysql:host='.DB_HOST.';dbname='.DB_NAME.';charset='.DB_CHAR; 
 self::$instance = new PDO($dsn, DB_USER, DB_PASS, $opt); 
 } catch (PDOException $e) { 
 die("Идёт обновление"); 
 } 
 } 
 return self::$instance; 
 } 
 public static function __callStatic($method, $args) 
 { 
 if ($method == 'query' || $method == 'execute') static::$counter++; 
 return call_user_func_array(array(self::instance(), $method), $args); 
 } 
 public static function run($sql, $args = array()) 
 { 
 static::$counter++; 
 $stmt = self::instance()->prepare($sql); 
 $stmt->execute($args); 
 return $stmt; 
 } 
 }