Algo parecido a:
Código PHP:
$path_folder1 = "path/to/carpeta1/"; // mira el / final!
$results = array();
if ($dh = opendir($path_folder1)) {
while (($dir = readdir($dh)) !== false) {
if(is_dir($path_folder1.$dir)) $results[] = $dir;
}
closedir($dh);
}
foreach($results as $r) echo $r."<br/>";
Ciao!