A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Certification_verification.php

Line Number: 57

Backtrace:

File: /home/naid/public_html/application/controllers/Certification_verification.php
Line: 57
Function: _error_handler

File: /home/naid/public_html/index.php
Line: 331
Function: require_once