Question

I’ve got the following code that I can’t seem to get working:

function drawTable($result)
{

    var_dump($result);
    echo '<table border = "1" cellpadding="10">';
    echo '<tr>             
            <th>Album</th>               
            <th>Tracks</th>
            <th>Price</th>
            <th>Purchase</th>               
         </tr>';

    foreach($result as &$album) {

        $albumID = $album['Album_ID'];
        var_dump($albumID);

        //echo '<tr><td><img src="' . $resultRow['Image_URL'] . '" width="200px" height="200px"> </td>';

        $tracksQuery = "SELECT Track_Title FROM Track WHERE (Album_ID = '$albumID')";

        var_dump($tracksQuery);

        $DBConnector2 = new DBConnector();

        $tracks = $DBConnector2->getSQL($tracksQuery);

        var_dump($tracks);

        while ($trackTitle = mysqli_fetch_array($tracks)) {
            echo $trackTitle['Track_Title'] . '<br />';

        }
    }

     echo '</table>';
}

The var $result is a list of Album_IDs. I want to iterate over this using a foreach and also to run a query to get its associated tracks.

The var_dump gives:

object(mysqli_result)#4 (0) { }

In addition, the SQL I’m using for $result is

SELECT *
FROM Album
ORDER BY Album.Album_Name ASC

Very basic. You can see the other SQL use in the loop.

What am I doing wrong? Thanks.

Answer 1

I assume that $result is the return of a mysql_query function. You can’t do that as it is still a reference to a mysql resultset, not the real mysql result.

Instead of using the foreach iteration, use a while loop like the following:

while ($album = mysql_fetch_assoc($result)) {
 ...
 ...
}

I’m not so sure whether in the first place you may pass a mysql result reference in a function but you can give it a try 🙂