| db_query | includes/database.pgsql.inc | Runs a basic query in the active database. |
| db_result | includes/database.pgsql.inc | Return an individual result field from the previous query. |
| flood_is_allowed | includes/common.inc | Check if the current visitor (hostname/IP) is allowed to proceed with the specified event. |
| ip_address | includes/bootstrap.inc | If Drupal is behind a reverse proxy, we use the X-Forwarded-For header
instead of $_SERVER['REMOTE_ADDR'], which would be the IP address
of the proxy server, and not the client's. |