PHP function returns unexpected values - php

Question

Okay I'm new here and I have been trying to figure this out all day I have two functions one calling the other but my functions only returns the last value for example 29 when it should return multiple values. As wondering how can I fix this problem so that my functions return all the values.
Here is my PHP code.
function parent_comments(){
if(articles_parent_comments_info($_GET['article_id']) !== false){
foreach(articles_parent_comments_info($_GET['article_id']) as $comment_info){
$comment_id = filternum($comment_info['comment_id']);
reply_comment_count($comment_id);
}
}
}
function reply_comment_count($parent_id){
if(articles_reply_comments_info($_GET['article_id']) !== false){
foreach(articles_reply_comments_info($_GET['article_id']) as $reply_info){
$comment_id = filternum($reply_info['comment_id']);
$reply_id = filternum($reply_info['parent_id']);
if($parent_id === $reply_id){
reply_comment_count($comment_id);
}
}
}
return $comment_id;
}

Answer 1

You use recursivity to return your $comment_id. If I understand your needs, you want to get every reply id linked to one article id.
In reply_comment_count you return $comment_id but as it rescursively used and you don't keep the previous id returned you only get the last.
If you want to get numerous $comment_id instead of only one, I suggest you to return an array where you push $comment_id every time you find one. Something like that:
func parent_comments(){
loop in articles to get comment_id {
count_array = reply_comment_count(comment_id, count_array)
}
}
func reply_comment_count(parent_id, count_array) {
loop to get id linked to parent_id {
if id is an article {
count_array = reply_comment_count(id, count_array) #recursive call
}
else {
count_comment = count comment linked
count_array.push(count_comment)
}
}
return count_array # when you return your count_array due to recursive call it will be filled with every count, and not only the last
}
I hope this pseudo langage is clear for you. But as you only return the last count you found, you will only have this one.