I am getting this error on one of my pages 'Warning: ini_set(): Cannot change zlib.output_compression - headers already sent in /home/weprint/public_html/ad_network.php on line 78' But the ads are still displaying. Can anyone offer some advice? Appreciate it ;-)
Your php code is sending HTML headers before reaching the ad network code. If you are not sending headers with header() this will be any output - even a blank line or space outside of the php tags. Make sure your opening php tag is the *first* thing in the file and that you are not jumping in and out of php. Output compression is probably not enabled, so it doesn't need to be disabled