[PHP] lister dossier et fichier séparément

<?php 
function scanDirectories($rootDir, $allData=array()) { 
    // set filenames invisible if you want 
    $invisibleFileNames = array(".", "..", ".htaccess", ".htpasswd"); 
    // run through content of root directory 
    $dirContent = scandir($rootDir); 
    foreach($dirContent as $key => $content) { 
        // filter all files not accessible 
        $path = $rootDir.'/'.$content; 
        if(!in_array($content, $invisibleFileNames)) { 
            // if content is file & readable, add to array 
            if(is_file($path) && is_readable($path)) { 
                // save file name with path 
                $allData[] = $path; 
            // if content is a directory and readable, add path and name 
            }elseif(is_dir($path) && is_readable($path)) { 
                // recursive callback to open new directory 
                $allData = scanDirectories($path, $allData); 
            } 
        } 
    } 
    return $allData; 
} 
?> 

--- 
Array 
( 
    [0] => www/index.php 
    [1] => www/admin.php 
    [3] => www/css/css.css 
    [4] => www/articles/2007/article1.txt 
    [4] => www/articles/2006/article1.txt 
    [8] => www/img/img1.png 
)

function listeDossiers($chemin){ 
$dossier = opendir($chemin); // On ouvre le dossier 
if($dossier){ // Si ca marche 
while($f = readdir($dossier)){ // On liste fichiers et dossiers 
if(is_dir($chemin.$f)){ 
echo "Dossier : $f"<br>"; 
} 
} 
} 
}