摘要：
* 新建mysqli对象 $mysqli = new mysqli ( $host, $username, $password, $database ); * 判断是否连接成功if (mysqli_connect_errno ()) { echo "连接数据库失败：" . mysqli_connect_error (); $mysqli = null; exit ();} * 定义sql语句 $query = "select * from db_name where condition * 准备查询$stmt = $mysql... 阅读全文