Answered: How to display a list of usernames when you have an array of USERIDs?

For future reference,

First, the query to get userid must return a flat array, not a nested one. You must use qa_db_read_all_values(qa_db_query_sub()). In the future 1.9 version, the core developers may change this.

To list the items, you can use this to list the first 3 values, the rest can be expressed as "and # others",

list($first, $second, $third) = $userids;

echo $first. ' '. $second.' '.$third. 'have answered this question';

That's why you  need a flat array, not nested.

To return the username, use this Q2A function, which is missing from official DOCS.

• qa_userid_to_handle($first)
• qa_userid_to_handle($second)
• qa_userid_to_handle($third)

Similarly, to display avatars, you do MySQL queries, or exploit the Q2A functions to return avatars from $handle (ie, username).