/* Add snippet to drupal_error_handler in
 * includes/common.inc
 */
/**
 * Log errors as defined by administrator.
 *
 * Error levels:
 * - 0 = Log errors to database.
 * - 1 = Log errors to database and to screen.
 */
function drupal_error_handler($errno, $message, $filename, $line, $context) {
  // If the @ error suppression operator was used, error_reporting will have
  // been temporarily set to 0.
  if (error_reporting() == 0) {
    return;
  }

  // E_NOTICE HACK
  global $conf;
  if (!empty($conf['e_notice_suppress']) && ($errno == E_NOTICE)) {
    return;
  }
  // END E_NOTICE HACK

/* Now add
 * $conf['e_notice_suppress'];
 */ to your settings.php