<?php
$link = mysqli_connect("localhost","root","root","dbname"); //连接数据库
$sql = "select field from dbname limit 1";
$ressql = mysqli_query($link,$sql);//执行sql
$res = $ressql->fetch_object()->field;//得到结果
<?php
$link = mysqli_connect("localhost","root","root","dbname"); //连接数据库
$sql = "select field from dbname limit 1";
$ressql = mysqli_query($link,$sql);//执行sql
$res = $ressql->fetch_object()->field;//得到结果
原文：https://www.cnblogs.com/jdbeyond/p/8279736.html