how to display comments on post - php

Question

I've small blog users can add new post and others can comment on this post ( Post is working perfectly, comments is working too )
all posts is showing and all comment is showing but each Separated , how can I display it related.
function getPostInfoo(){
if($this->num_members < 0){
$q = "SELECT * FROM ".TBL_POSTS;
$result = mysqli_query($this->connection, $q);
$fields = array();
while($fetch=mysqli_fetch_array($result)){
echo "
<h3>".$fetch['post']."</h3>
<p>".$fetch['username']."</p>";
}
$this->num_members = mysqli_fetch_array($result);
}
//return
return $fields;
}
function getComment(){
$q = "SELECT ".TBL_POSTS.".*, ".TBL_COMMENTS.".*
FROM ".TBL_POSTS."
INNER JOIN ".TBL_COMMENTS." ON ".TBL_COMMENTS.".postid=".TBL_POSTS.".postid";
$result = mysqli_query($this->connection, $q);
/* Error occurred, return given name by default */
if(!$result || (mysqli_num_rows($result) < 1)){
return NULL;
}
$fields = array();
while($fetch=mysqli_fetch_array($result)){
$fields[] = "<p><a href='#'>".$fetch['username'].": </a>".$fetch['comment']."<br>
<small class='text-muted'>".$fetch['cmntdate']."</small>
</p>
";
}
/* Return result array */
return $fields;
}
test.php
echo "<div>";
$myList2 = $database->getPostInfoo();
if (is_array($myList2) || is_object($myList2)){
foreach($myList2 as $arrayItem2){
echo $arrayItem2;
}
}else {
echo "No Posts yet.";
}
echo "</div>
<div>";
$myList = $database->getComment();
if (is_array($myList) || is_object($myList)){
foreach($myList as $arrayItem){
echo $arrayItem;
}
}else {
echo "No comments yet.";
}
<form method='post' action='functions.php' method='POST'>
<div class='form-group' >
<textarea class='form-control' name = 'comment' placeholder='Write Comment'></textarea>
<input type='hidden' name='postid' value='1'>
<input type='hidden' name='comment_sub' value='1'>
<input type='submit' value='Add Comment!'>
</div>
</form>
</div>";
what I need to do is to display each comments on its own post & show comment textarea on each post
Please see the image https://i.stack.imgur.com/A4D55.jpg

Answer 1

You need to be getting one post at a time and then fetch its comments.
So your test.php should look this test.php?id=post_id
Where post_id is the unique identifier of your post based on your db structure
Could be e.g is 1 or 2 or if you are using auto-increment id
Then you can add the following code to at the beginning of your test.php to get the post id
$post_id = isset($_GET['id']) ? $_GET['id'] : '';
The fetch the post and it's comment from your table using the value of $post_id
Hope it helps

Answer 2

Try this function:
function getPostsInfo(){
$q = "SELECT ".TBL_POSTS.".`id`,".TBL_POSTS.".`post`, ".TBL_POSTS.".`username`, ".TBL_COMMENTS.".`username` as comment_username, ".TBL_COMMENTS.".`comment`, ".TBL_COMMENTS.".`cmntdate`
FROM ".TBL_POSTS."
LEFT JOIN ".TBL_COMMENTS." ON ".TBL_COMMENTS.".postid=".TBL_POSTS.".postid";
$result = mysqli_query($this->connection, $q);
$posts = [];
while($fetch=mysqli_fetch_array($result)){
if(isset($posts[$fetch["id"]])){
$posts[$fetch["id"]]["comments"][] = [
"username" => $fetch["comment_username"],
"comment" => $fetch["comment"],
"cmntdate" => $fetch["cmntdate"]
];
}else{
$posts[$fetch["id"]] = [
"post" => $fetch["post"],
"username" => $fetch["username"],
"comments" => [[
"username" => $fetch["comment_username"],
"comment" => $fetch["comment"],
"cmntdate" => $fetch["cmntdate"]
]]
];
}
}
return $posts;
}