Yes, don’t tell me this. I have to rewrite PHP based website because a framework doesn’t work with new PHP anymore. Back compatibility sucks in many software.
12 years old untouched framework (Nette). It worked with PHP 5.4 but as hosting provider switched to PHP 8, I’d rather pay extra fee for 5.4 and slowly rebuild site to 8, because there are so many things you probably need to change… This is the reason why Fortran or COBOL people are so valued for banks…because you want continuity not breakups.