function _vote_up_down_get_uid in Vote Up/Down 5

Get a uid for anonymous vs. registered voting

3 calls to _vote_up_down_get_uid()

theme_vote_up_down_widget in ./vote_up_down.module

theme_vote_up_down_widget_alt in ./vote_up_down.module

vote_up_down_vote in ./vote_up_down.module

An voting get handler with AJAX support

File

./vote_up_down.module, line 607

vote_up_down is a module that adds a widget for +1/-1 votes on nodes. It depends upon Voting API. It's based upon "simplevote.module".

Code

function _vote_up_down_get_uid() {
  global $user;
  if ($user->uid) {
    $uid = $user->uid;
  }
  else {
    if (variable_get('vote_up_down_anonymous_vote', 0)) {

      // Fake uid for anonymous users.
      // If the IP is valid turn it into a integer and add the number of the current day.
      // The current day is what limit anonymous voting to one vote per day and IP address.
      $hostname = isset($_SERVER['HTTP_X_FORWARDED_FOR']) ? $_SERVER['HTTP_X_FORWARDED_FOR'] : $_SERVER['REMOTE_ADDR'];
      if ($long = ip2long($hostname)) {
        $uid = abs($long) + date('z');
      }
    }
    else {
      $uid = NULL;
    }
  }
  return $uid;
}