php - foreach里面的foreach合并两个mysql查询结果

Question

我的查询生成两个结果，例如

然后我尝试使用两个带有两个 while 循环的数组来提取结果

while ($rowPost = mysqli_fetch_assoc($grabPostsQuery)) { 
  $posts[] = $rowPost;            
}
while ($rowComment = mysqli_fetch_assoc($grabCommentsQuery)) {
   $comments[] = $rowComment;
}

$grabPostsQuery = "SELECT * FROM posts ORDER BY postDate DESC";
$grabPostsQuery = mysqli_query($link, $grabPostsQuery);
$grabCommentsQuery = "SELECT * FROM comments ORDER BY commentDate DESC";
$grabCommentsQuery = mysqli_query($link, $grabCommentsQuery);

然后我做了一个嵌套的 foreach ，如下所示

foreach($posts as $post) {
   foreach($comments as $comment) {
       echo $post['postContent']."<br>";
       echo $comment['commentContent']."<br>";
   }
}

我可以访问帖子和评论，唯一的问题是 foreach 循环多次循环帖子和评论，然后显示它们两次

请帮忙吗？

Answer 1

简单地单独运行循环，而不是一个循环运行另一个循环......:

foreach($posts as $post) {
  echo $post['postContent']."<br>";
}
foreach($comments as $comment) {
  echo $comment['commentContent']."<br>";
}