PMA\libraries\SavedSearches::setId PHP Method

    public function setId($searchId)
    {
        $searchId = (int) $searchId;
        if (empty($searchId)) {
            $searchId = null;
        }
        $this->_id = $searchId;
        return $this;
    }

require_once 'libraries/sql.lib.php';
$response = PMA\libraries\Response::getInstance();
// Gets the relation settings
$cfgRelation = PMA_getRelationsParam();
$savedSearchList = array();
$savedSearch = null;
$currentSearchId = null;
if ($cfgRelation['savedsearcheswork']) {
    $header = $response->getHeader();
    $scripts = $header->getScripts();
    $scripts->addFile('db_qbe.js');
    //Get saved search list.
    $savedSearch = new SavedSearches($GLOBALS);
    $savedSearch->setUsername($GLOBALS['cfg']['Server']['user'])->setDbname($_REQUEST['db']);
    if (!empty($_REQUEST['searchId'])) {
        $savedSearch->setId($_REQUEST['searchId']);
    }
    //Action field is sent.
    if (isset($_REQUEST['action'])) {
        $savedSearch->setSearchName($_REQUEST['searchName']);
        if ('create' === $_REQUEST['action']) {
            $saveResult = $savedSearch->setId(null)->setCriterias($_REQUEST)->save();
        } elseif ('update' === $_REQUEST['action']) {
            $saveResult = $savedSearch->setCriterias($_REQUEST)->save();
        } elseif ('delete' === $_REQUEST['action']) {
            $deleteResult = $savedSearch->delete();
            //After deletion, reset search.
            $savedSearch = new SavedSearches($GLOBALS);
            $savedSearch->setUsername($GLOBALS['cfg']['Server']['user'])->setDbname($_REQUEST['db']);
            $_REQUEST = array();
        } elseif ('load' === $_REQUEST['action']) {