Thread:Project:Support desk/Article names only numbers with length of 8 or 13/reply (2)

Thank you very much. May I ask a little assistance? I've never written php and can't get the hook running. In my understanding I have to write a new Extension with a hook. So I registered my simple and minimal extension in my LocalSettings.php:  and added the following files to .../extensions/TitleCheck:

== TitleCheck.php: ==

== TitleCheck.body.php: ==