In usage with the popup enxtension there’s an issue with sending header. The popup is working so far. But it creates following warning message:
Warning: Cannot modify header information – headers already sent by (output started at /home/megajob/public_html/wp-content/extensions/newsletter/popup/iframe.php:1) in /home/megajob/public_html/wp-content/extensions/newsletter/popup/iframe.php on line 3
Additionally it’s in conflict by the same issue with my fast secured contact form plugin that use sending cookies for captcha. If I activate that plug the warning messages looking like following:
Warning: Cannot modify header information – headers already sent by (output started at /home/megajob/public_html/wp-content/extensions/newsletter/popup/iframe.php:1) in /home/megajob/public_html/wp-content/extensions/newsletter/popup/iframe.php on line 3
Warning: session_start() [function.session-start]: Cannot send session cookie – headers already sent by (output started at /home/megajob/public_html/wp-content/extensions/newsletter/popup/iframe.php:1) in /home/megajob/public_html/wp-content/plugins/si-contact-form/si-contact-form.php on line 1947
Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at /home/megajob/public_html/wp-content/extensions/newsletter/popup/iframe.php:1) in /home/megajob/public_html/wp-content/plugins/si-contact-form/si-contact-form.php on line 1947
Even the popup is working in rest of functions – but the messages looks too ugly.
And so I’d become very happy if someone could kick me to an advice to solve that issue.