io, ho scritto questo:
[supersaibal]
if(isSet($row['Link1']) && $row['Link1']!=''){
$arr_img[count($arr_img)] = $row['Link1'];
}else{
$arr_img[count($arr_img)] = '';
}

if(isSet($row['Link2']) && $row['Link2']!=''){
$arr_img[count($arr_img)] = $row['Link2'];
}else{
$arr_img[count($arr_img)] = '';
}

if(isSet($row['Link3']) && $row['Link3']!=''){
$arr_img[count($arr_img)] = $row['Link3'];
}else{
$arr_img[count($arr_img)] = '';
}

if(isSet($row['Link4']) && $row['Link4']!=''){
$arr_img[count($arr_img)] = $row['Link4'];
}else{
$arr_img[count($arr_img)] = '';
}
[/supersaibal]

ma è troppo... esiste una cosa compatta?

dies