$fs = freemius($slug);
$timestamp = time();
$context_params = array('plugin_id' => $fs->get_id(), 'plugin_public_key' => $fs->get_public_key(), 'plugin_version' => $fs->get_plugin_version());
// Get site context secure params.
if ($fs->is_registered()) {
$site = $fs->get_site();
$plugin_id = fs_request_get('plugin_id', $fs->get_id());
if ($plugin_id != $fs->get_id()) {
if ($fs->is_addon_activated($plugin_id)) {
$fs_addon = Freemius::get_instance_by_id($plugin_id);
$site = $fs_addon->get_site();
}
}
$context_params = array_merge($context_params, FS_Security::instance()->get_context_params($site, $timestamp, 'checkout'));
} else {
$current_user = Freemius::_get_current_wp_user();
// Add site and user info to the request, this information
// is NOT being stored unless the user complete the purchase
// and agrees to the TOS.
$context_params = array_merge($context_params, array('user_firstname' => $current_user->user_firstname, 'user_lastname' => $current_user->user_lastname, 'user_email' => $current_user->user_email));
$fs_user = Freemius::_get_user_by_email($current_user->user_email);
if (is_object($fs_user)) {
$context_params = array_merge($context_params, FS_Security::instance()->get_context_params($fs_user, $timestamp, 'checkout'));
}
}
if ($fs->is_payments_sandbox()) {
// Append plugin secure token for sandbox mode authentication.
$context_params['sandbox'] = FS_Security::instance()->get_secure_token($fs->get_plugin(), $timestamp, 'checkout');
/**
* @since 1.1.7.3 Add security timestamp for sandbox even for anonymous user.
*/