Drupal 6 user password import to Drupal 7

Question

I don\'t really need to import any data into my D7 build other than users. I have (by SQL) imported my user data however, the D7 password encryption method is now different.

Answer 1

This answer was perfect. I used it to update from a Drupal 5 site. I made a couple of changes to suit my purposes:

1. I didn't limit the number of passwords that get updated. I wanted all of them updated, and the system I was updating had many more than 1,000 users.

2. I added a check to make sure I wasn't updating a password twice. This way, if it times out (as it did for me) modifying all the passwords, I can rerun the rehash.php to complete the conversion. Be aware, though, that once a user logs in, the leading "U" is removed when the password is re-hashed.

   if (substr($account->pass, 0, 1) == 'U')
   {
       continue;
   }