Question

我尝试从数组def index if params[:topic_id].present? @posts = @topic.posts.all else @posts = Post.includes(:topic).references(:topic).all @posts = @posts.order('topics.name desc') end if (Time.zone.parse(params[:start_date]) rescue nil).present? && (Time.zone.parse(params[:end_date]) rescue nil).present? @posts = @posts.sort_by_time(params[:start_date], params[:end_date]) else @posts = @posts.sort_by_time(Date.yesterday.to_s, Date.today.to_s) end @posts = @posts.eager_load(:ratings, :comments, :user, :users).paginate(page: params[:page], per_page: 10) @tags = Tag.all end def read @post.users << current_user unless @post.users.include?(current_user) end中获取随机值

我的插入行看起来不错

':server' => $gg

但是我的价值代码有很多错误，使页面说当前无法处理此请求。

$insertLogSQL -> execute(array(
    ':user' => $_SESSION['username'], 
    ':ip' => $host, 
    ':port' => $port, 
    ':time' => $time, 
    ':method' => $method, 
    ':stopped' => 0, 
    ':server' => $gg));`

错误是：

通知：未定义变量：第63行的C：\ xampp \ htdocs \ New \ boot.php中的赢家
致命错误：未捕获的PDOException：SQLSTATE [23000]：违反完整性约束：1048列“服务器”无法在C：\ xampp \ htdocs \ New \ boot.php：63
中为null 堆栈跟踪：
// the array
$arrX = array("Kay", "Joe","Susan", "Frank");

// get random index from array $arrX
$randIndex = array_rand($arrX);
$gg = $arrX[$randIndex];

PHP数组获取随机值以进行插入

0 个答案: