If I add this, or any other code, prior to a header() function then it will arrive at Headers Already Sent

Warning: Cannot modify header information - headers already sent by (output started at /home/lickaped/public_html/sitepoint.blickapedia.com.au/redirect.php:1) in /home/lickaped/public_html/sitepoint.blickapedia.com.au/redirect.php on line 4