分发器注册和退出登录

完善注册页面，复制登录页面，增加密码确认和性别
连接数据库，添加数据

function insertData($name, $pwd, $gender, $created_at)
{
    global $pdo;
    $sql = "INSERT INTO `user` SET `username`=?,`password`=?,`gender`=?,`created_at`=?";
    $stmt = $pdo->prepare($sql);
    $stmt->execute([$name, $pwd, $gender, $created_at]);
    if ($stmt->rowCount() == 1) {
        $flag = true;
    }
    return $flag;
}

增加后端可接受的参数gender,created_at
请求分发器 注册，退出登录

switch ($type) {

    case 'reg':
        $res = insertData($name, $pwd, $gender, $created_at);
        if ($res) {
            echo json_encode(['status' => 1, 'msg' => '注册成功'], 320);
            exit;
        }
        echo json_encode(['status' => 0, 'msg' => '注册失败'], 320);
        break;

    case 'logout':
        //删除注册的session数据文件 关闭session会话
        session_destroy();
        header('Location:index.php');
        break;
    default:
        exit('非法请求');
}