日期时间格式转时间戳

date_default_timezone_set('PRC');
function getPubTime($create_time){
    $arr = date_parse_from_format('Y年m月d日H时i分s秒',$create_time);
    $year=!empty($arr['year'])?$arr['year']:0;
    $month=!empty($arr['month'])?$arr['month']:0;
    $day=!empty($arr['day'])?$arr['day']:0;
    $hour=!empty($arr['hour'])?$arr['hour']:0;
    $minute=!empty($arr['minute'])?$arr['minute']:0;
    $second=!empty($arr['second'])?$arr['second']:0;
    $timestr =  mktime($hour,$minute,$second,$month,$day,$year);
    return $timestr;
}
echo getPubTime('2020年08月25日17时28分46秒');