Many calendar events point to defunct user groups

I was just looking at the official PHP events calendar and it seems like the vast majority of events listed are for groups that no longer exist. I reviewed the first 7 days of the November 2024 calendar, and only 5 of the 27 events listed are actually active:

• Page/domain not found: 14
• Link works + event still exists: 5
• Meetup exists but PHP calendar is broken: 1
• Last meetup > 5 years ago: 3
• Last meetup > 2 years ago: 1
• Ads for training: 3

I'd be happy to help. I can potentially PR a script that could at least check that event links resolve. I'd also be happy to manually review existing recurring events and remove the ones that no longer exist.

Let me know if you'd be open to accepting a PR for some automated clean up, and maybe point me in the direction of how I might apply for some sort of moderation access to the calendar?

Thanks for all the hard work the existing php.net volunteers put into to keeping the site updated and working!

Inizia con il calendario degli eventi PHP e rivedi gli inserimenti dei primi sette giorni di novembre 2024, verificando i link agli eventi e gli inserimenti ricorrenti rispetto alle categorie descritte nell’issue. Determina se il lavoro previsto consiste nel controllo automatico dei link, nella rimozione manuale dei gruppi non più esistenti o in entrambe le attività; il lavoro è completato quando la pulizia concordata è stata applicata e gli inserimenti inattivi non vengono più mostrati.