Database Connection in singleton Mode
'127.0.0.1','user' => 'root','password' => '','database' => 'video',);private function __construct() {}static public function getInstance() {if(!(self::$_instance instanceof self)) {self::$_instance = new self();}return self::$_instance;}public function connect() {if(!self::$_connectSource) {self::$_connectSource = @mysql_connect($this->_dbConfig['host'], $this->_dbConfig['user'], $this->_dbConfig['password']);if(!self::$_connectSource) {throw new Exception('mysql connect error ' . mysql_error());//die('mysql connect error' . mysql_error());}mysql_select_db($this->_dbConfig['database'], self::$_connectSource);mysql_query("set names UTF8", self::$_connectSource);}return self::$_connectSource;}}/*$connect = Db::getInstance()->connect();$sql = "select * from video";$result = mysql_query($sql, $connect);echo mysql_num_rows($result);var_dump($result);*/