mysqli_query가 PHP에서 실패했습니다.

mysqli_query(connection,query,resultmode);<br/>

<?php <br/>// 假定数据库用户名：root，密码：123456，数据库：RUNOOB <br/>$con=mysqli_connect("localhost","root","123456","RUNOOB"); <br/>if (mysqli_connect_errno($con)) <br/>{ <br/>    echo "连接 MySQL 失败: " . mysqli_connect_error(); <br/>} <br/> <br/>// 执行查询<br/>mysqli_query($con,"SELECT * FROM websites");<br/>mysqli_query($con,"INSERT INTO websites (name, url, alexa, country)<br/>VALUES (&#39;百度&#39;,&#39;https://www.baidu.com/&#39;,&#39;4&#39;,&#39;CN&#39;)");<br/> <br/>mysqli_close($con);<br/>?><br/>