$ubicacion='quienesArriba';
$cbanner=mysqli_query($conexion,"SELECT * FROM banners WHERE banner_ubicacion='$ubicacion' ORDER BY banner_orden");
while($banner=mysqli_fetch_assoc($cbanner)){
echo "
$ubicacion='quienesLateral';
$cbanner=mysqli_query($conexion,"SELECT * FROM banners WHERE banner_ubicacion='$ubicacion' ORDER BY banner_orden");
while($banner=mysqli_fetch_assoc($cbanner)){
echo "