A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: controllers/Main.php

Line Number: 336

Backtrace:

File: /home/hitech/application/controllers/Main.php
Line: 336
Function: _error_handler

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

A PHP Error was encountered

Severity: Warning

Message: array_key_exists() expects parameter 2 to be array, null given

Filename: controllers/Main.php

Line Number: 337

Backtrace:

File: /home/hitech/application/controllers/Main.php
Line: 337
Function: array_key_exists

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

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/hitech/system/core/Exceptions.php:271)

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /home/hitech/application/controllers/Main.php
Line: 337
Function: redirect

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