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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