<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2018 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
declare(strict_types=1);

namespace Fisharebest\Webtrees\Statistics\Helper;

use Fisharebest\Webtrees\Database;

/**
 *
 */
class Sql
{
    /**
     * Run an SQL query and cache the result.
     *
     * @param string $sql
     *
     * @return \stdClass[]
     */
    public static function runSql(string $sql): array
    {
        static $cache = [];

        $id = md5($sql);

        if (isset($cache[$id])) {
            return $cache[$id];
        }

        $rows       = Database::prepare($sql)->fetchAll();
        $cache[$id] = $rows;

        return $rows;
    }
}
