A PHP Error was encountered

Severity: Notice

Message: Only variable references should be returned by reference

Filename: core/Common.php

Line Number: 239

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /mnt/web015/a2/69/52747269/htdocs/codeigniter_200_system/core/Exceptions.php:170)

Filename: helpers/url_helper.php

Line Number: 543