<?php
$mysqli = new mysqli("域名/ip", "用户", "密码","数据库名");
if(!$mysqli) {
echo"database error";
}else{
echo"php env successful";
<!--$db = mysqli_select_db($mysqli,'demo'); // mysql_select_db被删除，mysqli_select_db参数相反-->
<!--if($db){-->
<!-- echo"数据库连接成功";-->
<!--}else{-->
<!-- echo"数据库连接失败";-->
<!--}-->
$result = mysqli_query($mysqli , "select * from `user`"); //表名要注意如果是关键字的话要``处理；
$result =mysqli_fetch_all($result);
var_dump($result);
}
// $mysqli->close(); //关闭链接
?>
