预定义常量

The 时间常量 are defined since PHP 5.1.1 and they offer standard date representations, which can be used along with the date format functions (like date()).

Following constants exists since PHP 5.1.2 and specify a format returned by functions date_sunrise() and date_sunset().

constant SUNFUNCS_RET_TIMESTAMP

(integer) Timestamp

constant SUNFUNCS_RET_STRING

(integer) Hours:minutes (example: 08:02)

constant SUNFUNCS_RET_DOUBLE

(integer) Hours as floating point number (example 8.75)