There are two websites, more are probably coming. One is a simple PHP site and the other is Drupal. The objectives are:
- to have two user accounts created when a new user registered on any website
optionally:
- when a user change a password on any website, the password is synced to another
Any suggestions? Thanks
You could use CAS. There is a drupal module and there is phpCAS. This should work fine but this is no php-only solution. drupal.org itself uses bakery for SSO.