我如何合并来自两个mysql查询的数据

Question

我早些时候问过这个问题，但是似乎没人给我我想要的答案。

那么，如何合并来自两个获取每列的mysql查询的数据，或者如何合并获取两个查询中指定的每列的两个mysql查询的数据？

查询1：

SELECT b.id, b.post_text, c.default_photo, d.first_name, e.status 
FROM posts b 
INNER JOIN profiles c 
INNER JOIN users d 
INNER JOIN friendship e 
ON b.from_user = c.user_id 
AND b.from_user = d.id 
AND e.friend_id = b.from_user 
WHERE e.status = 'Friend' 
AND e.user_id = :id
ORDER BY b.id DESC

QUERY 1返回帖子。 朋友发布的帖子

查询2

SELECT b.id, b.by_who_id, b.photo_dir, c.default_photo, d.first_name, e.status
FROM photos b 
INNER JOIN profiles c 
INNER JOIN users d 
INNER JOIN follower e 
ON b.by_who_id = c.user_id 
AND b.by_who_id = d.id 
AND e.from_user = b.from_user 
WHERE e.status = 'Following' 
AND e.following_who_id = :id
ORDER BY b.id DESC

现在QUERY 2返回照片。 如果说我跟随“某人”，它将获取他们的照片

现在我想要的是查看朋友发帖和我关注的人的照片的组合..我该怎么做哦，我要按日期返回ORDER BY DATE

photo 
photo 
post 
post 
post 
photo 
post 

如果它的1个查询可能像这样，我可能无法输出此方式

<?php
if ( !empty($two_queries_in_one) ) {
    foreach($two_queries_in_one as $post) :
        if ( empty($post["photo_dir"]) ) {
?>
            html here
<?php
    } else {?>
            html here

<?php } endforeach;

}
?>

Answer 1

该代码可以使用一些优化，但是思路很明确：

$combined = array();
foreach($query1 as $row)
{
    $combined[$row['timestamp']][] = $row; // unix timestamp in order to sort
}

foreach($query2 as $row)
{
    $combined[$row['timestamp']][] = $row; // unix timestamp in order to sort
}

ksort($combined); // sort the keys

foreach($combined as $timestamp => $rows)
{
   foreach($rows as $row)
   {
      if(isset($row['photo_dir'])
      {
         // your code for the photo 
      }
      else
      {
         // your code for the normal post
      }
   }
}