[eluser]Unknown[/eluser]
I'm currently working on a project and using codeignter. In some of my controller functions I'm using redirect but when I hit these redirects I keep getting the following error message
Severity: Warning
Message: Cannot modify header information - headers already sent by (output started at C:\pathtoproject\system\core\Exceptions.php:170)
Filename: helpers/url_helper.php
Line Number: 551
I was just wondering what constitutes as headers already being sent and are there any tell tail signs I should look out for?
Thanks for any help