How common is it to encounter issues with PHP sessions after a web host update?

It is not uncommon to encounter issues with PHP sessions after a web host update, as changes in server configurations can sometimes affect session handling. One common issue is session data not being saved or retrieved properly, leading to unexpected behavior on the website. To solve this, you can try regenerating the session ID after a host update, which can help resolve any conflicts with the existing session data.

session_start();
session_regenerate_id();