Howto disable user registration PHPBB2

[parox]

#
#-----[ OPEN ]---------------------------------------------
#
profile.php

#
#-----[ FIND ]---------------------------------------------
#
init_userprefs($userdata);

#
#-----[ AFTER, ADD ]---------------------------------------------
#
if ($userdata['user_id'] == ANONYMOUS)
{
redirect(append_sid("login.$phpEx?redirect=index.$phpEx", true));
}