Problema upload

[Ruben Elmo]

Salve ragazzi,
ho sul mio account tophost una pagina php e sto lavorando per l'upload di files:

if($_GET['p']=='upload'){ // UPLOAD
        echo '<h2>Upload</h2>';
        if ($_GET['upload']){
            if ($_FILES["files"]['size'] > 0) { // UPLOAD DEI FILES
                
                switch ($_POST['categoria']){
                        case 1:   $path=getcwd().'upload/mutuo/';
                        break;
                        case 2:   $path=getcwd().'/upload/prestito/';
                        break;
                        case 3:   $path=getcwd().'/upload/cessione/';
                        break;
                        case 4:   $path=getcwd().'/upload/servizi/';
                        break;
                        default:   echo ("");
                        break;
                }
                
                if (move_uploaded_file(getcwd().'/'.$_FILES[files]['tmp_name'],$path.$_FILES[files]['name'])){
                    echo "OK!";
                }
            }
        } else {
            echo '<form method="post" action="admin.php?p=upload&upload=1" enctype="multipart/form-data"/>';
            echo '<h2>Dove pubblico il file?</h2>';
            echo '<div><input type="radio" name="categoria" value="1" checked="yes"/> Mutuo</div>';
            echo '<div><input type="radio" name="categoria" value="2"/> Prestito Personale / Carta</div>';
            echo '<div><input type="radio" name="categoria" value="3"/> Cessione/Delega</div>';
            echo '<div><input type="radio" name="categoria" value="4"/> Servizi</div>';
            echo '

<input type="file" name="files" class="textbox"/></p>';
            echo '<input type="submit" value="Salva file" class="pls">';
            echo '</form>';
        }
    } 

E in nessuna maniera sto riuscendo a uploadare il file!!

L'errore che mi restituisce è sempre:
Warning: move_uploaded_file(/home/mhd/www.mantisworks.net/htdocs/upload/mutuo/bankopoli.doc) [function.move-uploaded-file]: failed to open stream: No such file or directory in /home/mhd-01/www.mantisworks.net/htdocs/lavori/gagliardo/inc/cont_admin.php on line 1098

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/tmp/phpZftgLm' to '/home/mhd/www.mantisworks.net/htdocs/upload/mutuo/bankopoli.doc' in /home/mhd-01/www.mantisworks.net/htdocs/lavori/gagliardo/inc/cont_admin.php on line 1098