PHP 获取当天年份、月份及当月天数，第一天最后一天等~

获取上个月第一天及最后一天.

echo date('Y-m-01', strtotime('-1 month'));
echo "<br/>";
echo date('Y-m-t', strtotime('-1 month'));
echo "<br/>";

获取当月第一天及最后一天.

$BeginDate = date('Y-m-01', strtotime(date("Y-m-d")));
echo $BeginDate;
echo "<br/>";
echo date('Y-m-d', strtotime("$BeginDate +1 month -1 day"));
echo "<br/>";

获取当天年份、月份、日及天数.

echo " 本月共有:" . date("t") . "天";
echo " 当前年份:" . date('Y');
echo " 当前月份:" . date('m');
echo " 当前几号:" . date('d');
echo "<br/>";

使用函数及数组来获取当月第一天及最后一天,比较实用,出自网友.

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);
}
$today = date("Y-m-d");
$day = getthemonth($today);
echo "当月的第一天: " . $day[0] . " 当月的最后一天: " . $day[1];
echo "<br/>";