Please note that this function, like rmdir, requires that the directory be empty.(PHP 4, PHP 5, PHP 7, PHP 8)
ftp_rmdir — Efface un dossier FTP
 
   ftp_rmdir() efface le dossier
   directory.
  
ftpUne instance de FTP\Connection.
directoryLe dossier à effacer. Ce doit être soit un chemin absolu, soit un chemin relatif vers un dossier vide.
| Version | Description | 
|---|---|
| 8.1.0 | La paramètre ftpattend désormais une instance de
  FTP\Connection ; auparavant, une resource était attendu. | 
Exemple #1 Exemple avec ftp_rmdir()
<?php
$dir = 'www/';
// Mise en place d'une connexion basique
$ftp = ftp_connect($ftp_server);
// Identification avec un nom d'utilisateur et un mot de passe
$login_result = ftp_login($ftp, $ftp_user_name, $ftp_user_pass);
// Tentative d'effacement du dossier $dir
if (ftp_rmdir($ftp, $dir)) {
    echo "Le dossier $dir a été effacé avec succès\n";
} else {
    echo "Il y a eu un problème lors de l'effacement du dossier $dir\n";
}
ftp_close($ftp);
?>Please note that this function, like rmdir, requires that the directory be empty.ftp_rmdir() delete only empty folders...
if you want to delete the entire contents of a folder try its.
Exemple...
<?php
$ftp_server = "YourIP";
$ftp_user_name = "YourUsername";
$ftp_user_pass = "YourPassword";
// Connection
echo "Connecting to $ftp_server";
$conn_id = ftp_connect($ftp_server);
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
//Enable PASV ( Note: must be done after ftp_login() )
ftp_pasv($conn_id, true);
// check connection
if((!$conn_id) || (!$login_result)){
    die("FTP connection has failed !");
}
echo "<br/>Login Ok.";
// Function to delete an entire folder
function ftp_rrmdir($conn_id, $directory){
    $lists = ftp_mlsd($conn_id, $directory);
    unset($lists[0]);
    unset($lists[1]);
    foreach($lists as $list){
        $full = $directory . '/' . $list['name'];
        if($list['type'] == 'dir'){
            ftp_rrmdir($conn_id, $full);
        }else{
            ftp_delete($conn_id, $full);
        }
    }
    ftp_rmdir($conn_id, $directory);
    return true;
}
//Now run ftp_rrmdir()
if(ftp_rrmdir($conn_id, 'YOUR/PATH/')){
    echo = "Folder deleted !";
}
//close
ftp_close($conn_id);
?>