&LT?php

&LT?php//简单留言板单页php源码//连接数据库$servername=“localhost”;$username=“username”;$password=“password”;$dbname=“myDB”;$conn=newmysqli($servername,$username,$password,$dbname);//检查连接if($conn->connect_error){die(“连接失败:”.$conn->connect_error);}//添加留言if(isset($_POST[‘submit’])){$message=$_POST[‘message’];$emoji=$_POST[’emoji’];$sql=“INSERTINTOmessages(message,emoji)VALUES(‘$message’,‘$emoji’)”;if($conn->query($sql)===TRUE){echo“留言添加成功”;}else{echo“Error:”.$sql.“&LTbr>”.$conn->error;}}//获取留言$sql=“SELECT*FROMmessages”;$result=$conn->query($sql);if($result->num_rows>0){while($row=$result->fetch_assoc()){echo“留言:”.$row[“message”].”–表情:”.$row[“emoji”].“&LTbr>”;}}else{echo“0个结果”;}$conn->close();?>//问题:留言刷新页面后消失，需要加入储存功能。https://gocodehub.com/3195.html