Hi,
I installed Joomsef 2.2.6 and bought the Adsmanager extension but have an error message even after cleaning the cache and URLs.
Error message:

Fatal error: Call to undefined function: http_build_query() in /home.10.28/xxxxxx/www/xxxxx/components/com_sef/sef_ext/com_adsmanager.php
See my website

Thanks