<?php

function paranoia_form_alter(&$form, $form_state, $form_id) {
  $form['#submit'][] = 'paranoia_submit_callback';
}

function paranoia_submit_callback($form, &$form_state) {
  global $user;

  db_query("INSERT INTO {audit_trail} (uid, hostname, time, form_id, url, data) VALUES(%d, '%s', %d, '%s', '%s', '%s')", $user->uid, $_SERVER['REMOTE_ADDR'], $_SERVER['REQUEST_TIME'], $form['#id'], $form['#action'], serialize($form_state['values']));
}