对标准的日期时间格式转换为整型的时间数据及把整型的日期时间数转换为标准的日期时间格式的数据，在数据库存储时经常会遇到关于日期的数据格式转换-The standard date time format is converted to integer data and the time to put the date time integer converted into the standard date time format data stored in the database often encountered in the data about the date format conversion