得到某年某月最后一天

2022-03-02

<?php

echo get_end_day_of_month(2022,3)."<br />";

echo get_end_day_of_month(2022,2)."<br />";

echo get_end_day_of_month(2022,1)."<br />";

function get_end_day_of_month($year,$month){

    date_default_timezone_set("Asia/Shanghai");

    $month = $month + 1;

    if($month>12){

        $month = 1;

        $year = $year + 1;

    }

    $date = date_create($year."-".str_pad($month,2,"0",STR_PAD_LEFT)."-01");

    date_add($date, date_interval_create_from_date_string('-1 days'));

    $ret =  date_format($date, 'Y-m-d');

    return $ret;

}

?>