########### FORMULARIO DA PAGINA (OUTRA) ##############

<div id="upload_file" style="position:absolute; visibility:show; left:9px; top:105px; z-index:0">
<form name="upload_file" action="cria.php" method="post">
   <table class="forumline">
     <tr>
       <td>Arquivo:</td>
     </tr>
     <tr>
       <td><input name="usufile" type="file"></td>
     </tr>
     <tr>
       <td><input type="submit" value="Upload"></td>
     </tr>
     <tr>
       <td><a href="javascript:history.go(-1);">Voltar</a></td>
     </tr>
   </table>
</form>
</div>

     ########### UPLOAD ##############

if(isset($_POST['usufile'])){
$filex=$_POST['usufile'];
$dirx=$_SESSION['dir'];

$filexname = $_FILE["usufile"]["name"];

  if(file_exists("/" . $dirx . "/" . $filexname)){
   print ("arquivo ja existe no servidor...<br>\n");
   exit;
  }

  $store = "/" . $dirx . "/" . $filexname;

if(is_uploaded_file($filexname)){
   echo "sim";
} else {
   echo "nao";
}

 if(!move_uploaded_file($_FILE["usufile"]["tmp_name"],$store)){
       echo "O arquivo não foi carregado";
  }
  //PS: aqui vc pode colocar um
  //header("Location: ./?p=pub&ext=php");
  //fica mais bonito e mais conforme aos padroes
  echo "<meta http-equiv=\"refresh\" content=\"0;URL=./?p=pub&ext=php\">";

}