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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