| db_next_id | includes/database.pgsql.inc | Return a new unique ID in the given sequence. |
| db_query | includes/database.inc | Runs a basic query in the active database. |
| db_result | includes/database.pgsql.inc | Return an individual result field from the previous query. |
| sess_destroy_uid | includes/session.inc | End a specific user's session |
| sess_regenerate | includes/session.inc | Called when an anonymous user becomes authenticated or vice-versa. |
| user_access | modules/user/user.module | Determine whether the user has a given privilege. |
| user_fields | modules/user/user.module | |
| user_load | modules/user/user.module | Fetch a user object. |
| user_module_invoke | modules/user/user.module | Invokes hook_user() in every module. |
| user_save | modules/user/user.module | Save changes to a user account or add a new user. |
| user_set_authmaps | modules/user/user.module | |