A PHP Error was encountered

Severity: 8192

Message: Optional parameter $action declared before required parameter $string is implicitly treated as a required parameter

Filename: helpers/my_helper.php

Line Number: 137

Backtrace:

File: /home2/wisuda/public_html/application/controllers/HomeController.php
Line: 9
Function: __construct

File: /home2/wisuda/public_html/index.php
Line: 315
Function: require_once