Returns the number of hours between two datetimes.


date_hour_span(date1, date2);

参数 描述
date1 第一个日期时间。
date2 用来比较的第二个日期时间。

返回: Real(实数)


With this function you can get the number of hours between two dates. This value is always positive, and incomplete hours will be returned as a fraction.


diff = date_hour_span(date_create_datetime( 2011, 9, 15, 11, 4, 0 ), date_current_datetime());

This would set "diff" to the number of hours between 15th September 2011, 11:04.0 and the current date and time.

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