phpexcel读取日期处理

function excelTime($date, $time=false){
if(is_numeric($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;
}
return $date;
}