Unknown column 'folder_name.visible' in 'field list'

[Stefan]

Wie kann ich das lösen?

Schreibe Deinen Query sauber:

$sql = "SELECT folder_name.id, folder_name.name, folder_name.visible, folder_name.status FROM folder_name WHERE folder_name.visible = ".$var_visible." AND folder_name.status = '".$var_status."'";";

$dir = mysql_query($sql);

Das sollte gehen.

Stefan