php 獲取一個月第一天與最後一天的代碼

復制代碼 代碼如下:
function getthemonth($date)
{
$firstday = date('Y-m-01', strtotime($date));
$lastday = date('Y-m-d', strtotime("$firstday +1 month -1 day"));
return array($firstday, $lastday);
}