zlacker

I see 5 years as a good minimum for LTS. Perhaps it's a personal bias, since our OS of choice (Debian) offers LTS for 5 years.

Edit for context: the small business that I work for takes on all kinds of random web work. It's not uncommon at all for us to be asked to rescue an application or website that's still running on PHP 5. For projects that we have initiated, by the time we migrate them all to PHP 8.2, it will be End of Life.