Question

I have 2 tables, one called posts and one called users. Inside posts I have several columns, one being a foreign key of userid. In my users table I have several columns including a userid and a username. I want to use the posts.userid to find the users.userid and show users.username. Currently I am using:

SELECT posts.postid, posts.title, posts.text, posts.link, posts.good, posts.bad, posts.userid
FROM posts

To get the data about each post and,

SELECT users.username, users.userid, posts.userid
FROM users, posts
WHERE users.userid = posts.userid

to get the data about each user, but when I do this the output of echo $row_therealuserid['username']; is always just the first user.

Answer 1

You need to use an array to fetch the other rows, then loop through that array.

$query = 'SELECT users.username, users.userid, posts.userid
FROM users, posts
WHERE users.userid = posts.userid';

$result = mysql_query($query) or die(mysql_error());


while($row = mysql_fetch_array($result)){
    echo $row['username'];
    echo "<br />";
}