Question

I’m still fairly new to mysql and would like to ask for some help.

users table

idusers      name           other_info
1           Test Last          email
2           True Blue          phone
3           False Name         phone
4           Purpose Test       email

likes table

id          idusers         iditems
1             1                3
2             1                4
3             1                4
4             2                3
5             3                3 
6             2                1   

Currently I have this table set up in mysql, and the idusers should match in my syntax to get information about that certain user that liked those certain items.

I currently have something like this

$liked_users = $dbh->query("SELECT users.idusers,likes.idusers FROM users,likes WHERE users.idusers = likes.idusers");

This should match up right?

But I’m trying to output some JSON array where this data of users should fall into certain iditems

    while($row = $items-> fetch(PDO::FETCH_ASSOC)){
        //$get_liked_idusers = $liked_idusers->fetchAll(PDO::FETCH_ASSOC);
        //$liked_users ->execute(array($get_liked_idusers));

    $json['data'][] = array(
    'id'=>$row['iditems'],
    "likes" => array(
    "data"=>$liked_users -> fetchAll(PDO::FETCH_ASSOC) //users should be displayed only if they liked the item that is going through this while loop only.
    )
    );
}

So I’m trying to output information regarding users inside the "data" array and it should follow the iditems. And I’m not sure how I would do so, because I don’t think adding “AND iditems = ?" inside my first $liked_users mysql syntax will work as its asking to get two different tables.

I hope my question is clear?

Thanks in advance!

Answer 1

You can do something like this

$liked_users = $dbh->query("SELECT users.idusers,likes.idusers,likes.iditems FROM users,likes WHERE users.idusers = likes.idusers")

cause you query should have that many feilds that you want to loop through your json data