Severity: Notice

Message: Undefined variable: ub

Filename: helpers/getbrowser_helper.php

Line Number: 43

Backtrace:

File: /var/www/html/conf/application/helpers/getbrowser_helper.php
Line: 43
Function: _error_handler

File: /var/www/html/conf/application/views/conference/scientific_program_pdf.php
Line: 3
Function: getBrowser

File: /var/www/html/conf/application/core/MY_Loader.php
Line: 9
Function: view

File: /var/www/html/conf/application/controllers/Conference.php
Line: 544
Function: conference_layout

File: /var/www/html/conf/index.php
Line: 321
Function: require_once