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PHP使用mysqli扩展库实现增删改查(面向对象版)

时间:2021-07-01 10:21:17 帮助过:2人阅读

//数据库操作类 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

<?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.html

PHP使用mysqli扩展库实现增删改查(面向对象版)

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