php封装类

 1 <?php 2 class DBDA{ 3 ????public $host = "localhost"; 4 ????public $uid = "root"; 5 ????public $pwd = ""; 6 ????public $dbname = "0710"; 7 ?????8 ????/* 9 ????????query方法：执行用户给的SQL语句，并返回相应的结果10 ????????$sql：用户需要执行的SQL语句11 ????????$type:用户需要执行的SQL语句的类型12 ????????return:如果是增删改返回true或false，如果是查询返回二维数组13 ????*/14 ????public function query($sql,$type=0){15 ????????$db = new MySQLi($this->host,$this->uid,$this->pwd,$this->dbname);16 ????????if(mysqli_connect_error()){17 ????????????return "连接失败！";18 ????????}19 ????????$result = $db->query($sql);20 ????????if($type){21 ????????????return $result;22 ????????}else{23 ????????????return $result->fetch_all();24 ????????}25 ????}26 }