htmlpurifier/plugins/phorum/settings/save.php

<?php

function phorum_htmlpurifier_save_settings() {
    global $PHORUM;
    if (phorum_htmlpurifier_config_file_exists()) {
        echo "Cannot update settings, <code>mods/htmlpurifier/config.php</code> already exists. To change
        settings, edit that file. To use the web form, delete that file.<br />";
    } else {
        $config = phorum_htmlpurifier_get_config();
        if (!isset($_POST['reset'])) $config->mergeArrayFromForm($_POST, 'config', $PHORUM['mod_htmlpurifier']['directives']);
        $PHORUM['mod_htmlpurifier']['config'] = $config->getAll();
        if(!phorum_htmlpurifier_commit_settings()){
            $error="Database error while updating settings.";
        } else {
            echo "Settings Updated<br />";
        }
    }
}

function phorum_htmlpurifier_commit_settings() {
    global $PHORUM;
    return phorum_db_update_settings(array("mod_htmlpurifier"=>$PHORUM["mod_htmlpurifier"]));
}