A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: models/Publicmodels.php

Line Number: 480

Backtrace:

File: /home/u620642131/public_html/application/models/Publicmodels.php
Line: 480
Function: _error_handler

File: /home/u620642131/public_html/application/controllers/Expert.php
Line: 21
Function: getuserid

File: /home/u620642131/public_html/index.php
Line: 315
Function: require_once