gformSynchroniseLibrary.php

add_action('gform_after_submission', 'gform_synchronise_media_library', 10, 2);
function gform_synchronise_media_library($entry, $form) {
    if(!function_exists('wp_generate_attachment_metadata')){require_once(ABSPATH . 'wp-admin/includes/image.php');}
    $post_id = $entry['post_id'];
    $fileupload_fields = GFCommon::get_fields_by_type($form, array("fileupload"));

    foreach($fileupload_fields as $field){
        $field_id = $field["id"];
        $file_url = $entry["$field_id"];
        if (isset($_FILES['input_' .$field_id]) && $file_url != '' && $file_url !=null){

            $upload_to_url = wp_upload_dir();
            $file_data = file_get_contents($file_url);
            $filename = basename($file_url);
            if (wp_mkdir_p($upload_to_url['path'] . '/resumes/' . $post_id)) // can we put it there
                $file = $upload_to_url['path'] . '/resumes/' . $post_id . '/' . $filename;
            else
                $file = $upload_to_url['basedir'] . '/resumes/' . $post_id . '/' . $filename; //get the whole location
            file_put_contents($file, $file_data);

            $wp_filetype = wp_check_filetype($filename, null );
            $attachment = array(
                'guid'              => $file,
                'post_title'        => sanitize_file_name($filename),
                'post_content'      => '',
                'post_status'       => 'inherit',
                'post_mime_type'    => $wp_filetype['type']

            );

            $attach_id = wp_insert_attachment($attachment, $file, $post_id);
            $attach_data = wp_generate_attachment_metadata($attach_id, $file);
            wp_update_attachment_metadata( $attach_id, $attach_data);
        }
    }
}