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cal_days_in_month

(PHP 4 >= 4.1.0, PHP 5)

cal_days_in_month -- Return the number of days in a month for a given year and calendar

说明

int cal_days_in_month ( int calendar, int month, int year )

This function will return the number of days in the month of year for the specified calendar.

参数

calendar

Calendar to use for calculation

month

Month in the selected calendar

year

Year in the selected calendar

返回值

The length in days of the selected month in the given calendar

范例

例 1. cal_days_in_month() example

<?php
$num = cal_days_in_month(CAL_GREGORIAN, 8, 2003); // 31
echo "There was $num days in August 2003";
?>



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