Elgg-Lorea-Hydra/actions/usersettings/save.php

<?php
/**
 * Aggregate action for saving settings
 *
 * @package Elgg.Core
 * @subpackage UserSettings
 */

elgg_make_sticky_form('usersettings');

// callbacks should return false to indicate that the sticky form should not be cleared
if (elgg_trigger_plugin_hook('usersettings:save', 'user', null, true)) {
	elgg_clear_sticky_form('usersettings');
}

forward(REFERER);