tinymce-editor/Application/fileman/php/copyfile.php

<?php
/*
  RoxyFileman - web based file manager. Ready to use with CKEditor, TinyMCE. 
  Can be easily integrated with any other WYSIWYG editor or CMS.

  Copyright (C) 2013, RoxyFileman.com - Lyubomir Arsov. All rights reserved.
  For licensing, see LICENSE.txt or http://RoxyFileman.com/license

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

  Contact: Lyubomir Arsov, liubo (at) web-lobby.com
*/
include '../system.inc.php';
include 'functions.inc.php';

verifyAction('COPYFILE');
checkAccess('COPYFILE');

$path = RoxyFile::FixPath(trim(empty($_POST['f']) ? '' : $_POST['f']));
$newPath = RoxyFile::FixPath(trim(empty($_POST['n']) ? '' : $_POST['n']));
if (!$newPath) {
    $newPath = getFilesPath();
}

verifyPath($path);
verifyPath($newPath);

if (is_file(fixPath($path))) {
    $newPath = $newPath . '/' . RoxyFile::MakeUniqueFilename(fixPath($newPath), basename($path));
    if (copy(fixPath($path), fixPath($newPath))) {
        echo getSuccessRes();
    } else {
        echo getErrorRes(t('E_CopyFile'));
    }
} else {
    echo getErrorRes(t('E_CopyFileInvalisPath'));
}