PHP WebService1-DB

单例访问数据库

---

class Db{

	static private $_instance;
	static private $_connectSource;
	private $_dbConfig=array(
		'host'=>'127.0.0.1',
		'user'=>'root',
		'password'=>'',
		'database'=>'db_prism'
	);
	
	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::$_connectSource) {
				die("mysql connect error :".mysql_error());
			}
			mysql_select_db($this->_dbConfig['database']);
			mysql_query('set names UTF8',self::$_connectSource);
		}
		
		return self::$_connectSource;
	}

}

调用单例

$connect=Db::getInstance()->connect();

　

---