[kh99]

I don't know anything about phpbb3, but googling for "phpbb3 password encryption" I found that there is a function in includes/functions.php (in the phpbb3 code) called phpbb_hash() that you can use to check the passwords. So you could probably grab that or at least refer to it.

Also, in vbulletin the password will normally be put through an md5 hash in the browser before it's sent, and the plain text password field will be cleared. But you can stop the plain text field being cleared by putting define('DISABLE_PASSWORD_CLEARING', 1); in your config.php.

Just FYI, there is a 'login_verify_failure_password' hook that gets called when a password check failed (it's in includes/functions_login.php around line 149). I thought I'd mention it, but I don't think using hooks is all that important especially since vb3 isn't being updated any more.

BTW, in the code you posted above, you have "SELECT importid" then you use $getuserid['importuserid']. I think you probably just included that code as an example, but I thought I'd mention it anyway.

Anyway, I know you were probably looking for someone with more knowledge of converting phpbb3 passwords, but maybe some of this will help.