$upload_errors = [];
                    $uploaded_files = [];

                    foreach(array("icon_img", "preview_img", "item_file") as $file_id) {
                        if(isset($_FILES[$file_id]) && isset($data['formData'][$file_id]) && $data['formData'][$file_id]) {
                            $upload = new Uploader($_FILES[$file_id]);

                            switch ($file_id) {
                                case "icon_img":
                                    $upload_id = "Thumbnail Image";
                                    $allowed_extensions = array('png', 'jpg', 'jpeg', 'gif');
                                    $allowed_types = array('image/jpeg','image/png','image/gif');
                                    $max_size = 2;
                                    $max_dimensions = array('200', '200');
                                    $upload_dir = "thumbnail";
                                    $file_name = $files['iname'];
                                    break;
                                case "preview_img":
                                    $upload_id = "Preview Image";
                                    $allowed_extensions = array('png', 'jpg', 'jpeg', 'gif');
                                    $allowed_types = array('image/jpeg','image/png','image/gif');
                                    $max_size = 3;
                                    $max_dimensions = array('1600', '800');
                                    $upload_dir = "preview";
                                    $file_name = $files['pname'];
                                    break;
                                default:
                                    $upload_id = "File";
                                    $allowed_extensions = array('zip', 'rar');
                                    $allowed_types = array('application/zip', 'application/octet-stream', 'application/x-zip-compressed', 'multipart/x-zip', 'application/x-rar-compressed');
                                    $max_size = 96;
                                    $max_dimensions = false;
                                    $upload_dir = "files/" . SECURE_FOLDER;
                                    $file_name = $files['fname'];
                            }

                            if ($allowed_extensions)
                                $upload->allowed_extensions($allowed_extensions);

                            if ($allowed_types)
                                $upload->allowed_types($allowed_types);

                            if ($max_size)
                                $upload->max_size($max_size);

                            if ($max_dimensions)
                                $upload->max_image_dimensions($max_dimensions); // in pixels

                            if ($upload_dir)
                                $upload->path("uploads/marketplace/items/" . $upload_dir);

                            $upload->name($file_name);
                            if ($upload->upload()) {
                                $uploaded_files[] = $upload->get_path($upload->get_error());
                            } else {
                                $upload_errors[] = $upload_id . " Upload: " . $upload->get_error();
                            }
                        }
                    }

                    if (count($upload_errors) > 0) {
                        foreach ($upload_errors as $error) {
                            echo $error . "<br>";
                        }
                        foreach ($uploaded_files as $file) {
                            @unlink($file);
                        }