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PHP 手册
后退		前进

mcal_day_of_year

(PHP 3 >= 3.0.13, PHP 4, PECL)

mcal_day_of_year -- Returns the day of the year of the given date

int mcal_day_of_year ( int year, int month, int day )

mcal_day_of_year() returns the day of the year of the given date.

后退	起点	前进
mcal_day_of_week	上一级	mcal_days_in_month