选择语言 :

Core_Date::days

Number of days in a given month and year. Typically used as a shortcut for generating a list that can be used in a form.

Date::days(4, 2010); // 1, 2, 3, ..., 28, 29, 30

array Core_Date::days( integer $month [, integer $year = bool false ] )

参数列表

参数类型描述默认值

$month integer Number of month

$year integer Number of year to check month, defaults to the current year bool false

参数	类型	描述	默认值
`$month`	`integer`	Number of month
`$year`	`integer`	Number of year to check month, defaults to the current year	bool false

返回值

array A mirrored (foo => foo) array of the days.

File: ./core/classes/date.class.php

public static function days($month, $year = FALSE)
{
    static $months = array();

    if ( $year === FALSE )
    {
        // Use the current year by default
        $year = date('Y');
    }

    // Always integers
    $month = (int)$month;
    $year = (int)$year;

    // We use caching for months, because time functions are used
    if ( empty($months[$year][$month]) )
    {
        $months[$year][$month] = array();

        // Use date to find the number of days in the given month
        $total = date('t', mktime(1, 0, 0, $month, 1, $year)) + 1;

        for( $i = 1; $i < $total; $i ++ )
        {
            $months[$year][$month][$i] = (string)$i;
        }
    }

    return $months[$year][$month];
}