thinkphp 使用 phpexcel 导入日期时间的问题

导入时间时出现 43753.416296296 则可以调用此函数就行了

private function excelTime($date, $time = false) {
        if (function_exists('GregorianToJD')) {
            if (is_numeric($date)) {
                $jd = GregorianToJD(1, 1, 1970);
                $gregorian = JDToGregorian($jd + intval($date) - 25569);
                $date = explode('/', $gregorian);
                $date_str = str_pad($date[2], 4, '0', STR_PAD_LEFT) . "-" . str_pad($date[0], 2, '0', STR_PAD_LEFT) . "-" . str_pad($date[1], 2, '0', STR_PAD_LEFT) . ($time ? " 00:00:00" : '');
                return $date_str;
            }
        } else {
            $date = $date > 25568 ? $date + 1 : 25569; /*There was a bug if Converting date before 1-1-1970 (tstamp 0)*/
            $ofs = (70 * 365 + 17 + 2) * 86400;
            $date = date("Y-m-d", ($date * 86400) - $ofs) . ($time ? " 00:00:00" : '');
        }
        return $date;
    }