Feedburner Awareness API + PHP:

Example:

Currently, there are
Warning: require_once(/nfsn/content/oncemore/htdocs/mod/cached.inc): Failed to open stream: No such file or directory in /home/public/proj/feedburner.api.php on line 13

Fatal error: Uncaught Error: Failed opening required '/nfsn/content/oncemore/htdocs/mod/cached.inc' (include_path='.:/usr/local/php/8.1.34-nfsn1/lib/:/usr/local/php/lib/') in /home/public/proj/feedburner.api.php:13 Stack trace: #0 {main} thrown in /home/public/proj/feedburner.api.php on line 13