PHP使用mysqli扩展库实现增删改查(面向对象版)

mysqli扩展库mysql扩展库的改进版本,在mysql扩展库的基础上提高了稳定性和效率,mysqli扩展库有两套东西,一套就是面向过程的mysqli另一套是面向对象的mysqli。操作方式大体和mysql扩展库大体一致,这次还是先抽取出来一个操作mysql的工具类,和调用的类。

1.mysqli扩展库操作数据库工具类

<?php
//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

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