在php中返回数组数组

Question

我正在构建一个函数以在 php 中返回一个数组数组，如下所示：

 function get_posts(){
        $ids = $post_userids = $names=$langs=$countrys=$post_images=$post_dates= $post_date_updateds = array();
        if ($countm = $mysqli->prepare("SELECT  SQL_CALC_FOUND_ROWS id,post_userid,name,lang,country,post_image,post_date,post_date_updated FROM posts  ORDER BY `post_date` DESC ;")) {
            $countm->execute(); 
            $countm->store_result();
            $countm->bind_result($id,$post_userid,$name,$lang,$country,$post_image,$post_date,$post_date_updated); // get variables from result.
            $nr = "SELECT FOUND_ROWS() ";
            $r = $mysqli->prepare($nr);
            $r->execute();
            $r->bind_result($no_posts);
            $r->fetch();
            $r->close();
     while ($l[] = $countm->fetch())
    {
      $ids[] = $id ;
      $post_userids[] = $post_userid ; 
      $names[] = $name ; 
      $langs[] = $lang ; 
      $countrys[] = $country ; 
      $post_images[] = $post_image ; 
      $post_dates[] = $post_date ; 
      $post_date_updateds[] = $post_date_updated ;   
     } ; 
       $countm->close();
     }else {printf("Prepared Statement Error: %s\n", $mysqli->error);}
  return array('ids' => $ids,'post_userids' => $post_userids,'names' => $names,'langs' => $langs,'countrys' => $countrys,'post_images' => $post_images,'post_dates' => $post_dates,'post_date_updateds' => $post_date_updateds, 'no_posts' => $no_posts);
  }

假设我的表中有两个条目，一个 ID 为 6，另一个 ID 为 7 当我尝试输出时

    $get_posts = get_posts();
    echo $get_posts['ids'][0]   //  it output  6

但是当我设置时

   echo $get_posts['ids'][1]   // to get id 7 it output  error 

这也行不通。

    echo $get_posts['no_posts']   //  it output  error  

我不知道是我做错了什么还是我错过了什么，或者是否有更好的方法来实现这一点。

编辑：

   var_dump($get_posts)

给了

    array(2) { ["ids"]=> array(1) { [0]=> int(6) } ["no_posts"]=> int(2) }

Answer 1

试试这样的简单方法：

function get_posts(){
    $posts = array();
    if ($result = $mysqli->query("SELECT  id, post_userid, name, lang, country, post_image, post_date, post_date_updated FROM posts ORDER BY `post_date` DESC ;")) {

        while ($row = $result->fetch_assoc())
        {
            $posts[$row['id']] = $row ;   
        }
    } else {
        printf("Prepared Statement Error: %s\n", $mysqli->error);
    }
    return $posts;
}