php中,从数据库读取数据,并以json格式返回数据。具体方法如下:
第一步,定义相关变量
$servername = "localhost";
$username = "root";
$password = "root";
$mysqlname = "datatest";
$json = '';
$data = array();
class User
{
public $id;
public $fname;
public $lname;
public $email;
public $password;
}
第二步,链接数据库,代码如下:
// 创建连接
$conn = mysqli_co