mysqli扩展库是mysql扩展库的改进版本,在mysql扩展库的基础上提升了稳定性和效率,mysqli扩展库有两套东西,一套就是面向过程的mysqli另外一套是面向对象的mysqli。操做方式大致和mysql扩展库大致一致,此次仍是先抽取出来一个操做mysql的工具类,和调用的类。php
1.mysqli扩展库操做数据库工具类html
<?php //数据库操做类 class DBUtil{ private $host="localhost"; private $username="root"; private $password="123456"; private $dbname="student"; private $conn; public function DBUtil(){ $this->conn=new mysqli($this->host, $this->username, $this->password,$this->dbname) or die($this->conn->connect_error); } //查询 public function query($sql){ $all= $this->conn->query($sql); return $all; } //插入,修改,删除 public function otherOperate($sql){ if($this->conn->query($sql)){ if($this->conn->affected_rows>0){ return "OK"; }else{ return "ERROOR"; } } } public function close(){ $this->conn->close(); } } ?>
2.下面是具体的调用工具类的代码mysql
<?php require_once "MySQLUtil.php"; /*$sql="select * from m_student"; $util=new DBUtil(); $result=$util->query($sql); while($row=$result->fetch_assoc()){ echo "$row[stuName]"."</br>"; } $result->free(); $util->close();*/ $sql="update m_student set stuName='杨幂' where id=3"; $util=new DBUtil(); $result=$util->otherOperate($sql); echo $result; $util->close(); ?>
参考阅读:www.manongjc.com/article/1206.htmlsql