Help understanding how to get data from mysql with php

I have some code that returns a single column in a table, but I need to pull all columns........Can some one point me in the right direction to do this?

Here is the code I am using to pull the single column

$query = "SELECT * FROM `$table_name` WHERE uuid = '$uuid'";
        $result = mysqli_query($dbh,$query);
        if (!$result)
        {
            echo 'Could not run query: ' . mysqli_error($dbh);
        }
        else
        {
            while ($result_list = mysqli_fetch_array($result, MYSQL_ASSOC))
                echo ("uuid:  ".$result_list["owner"]);
        }
        mysqli_close($dbh);                        

Thanks to anyone who can help.

EDIT: I should add I assume it is in the .$result_list[] area. I have tried several different things but nothing has worked so far.