php 获取一个月的第一天及最后一天的方法大全

PHP 获取上个月第一天及最后一天

$firstday = date('Y-m-01', strtotime('-1 month')); $lastday = date('Y-m-t', strtotime('-1 month'));

1	$firstday = date('Y-m-01', strtotime('-1 month')); $lastday = date('Y-m-t', strtotime('-1 month'));

PHP获取当月第一天及最后一天

$firstday = date('Y-m-01', strtotime(date("Y-m-d"))); $lastday = date('Y-m-d', strtotime("$firstday +1 month -1 day"));

1	$firstday = date('Y-m-01', strtotime(date("Y-m-d"))); $lastday = date('Y-m-d', strtotime("$firstday +1 month -1 day"));

PHP获取当前年份、月份、日及当月天数

echo "当前年份：".date('Y')."年 "; echo "当前月份：".date('m')."月 "; echo "本月共有：".date("t")."天 "; echo "今日为：".date('d')."号";

1	echo "当前年份：".date('Y')."年<br/>"; echo "当前月份：".date('m')."月<br/>"; echo "本月共有：".date("t")."天<br/>"; echo "今日为：".date('d')."号</br>";

示例：在函数中获取当月第一天及最后一天

function getdays($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");//获取当天作为参数 $day=getdays($today); echo "当月的第一天: ".$day[0]." 当月的最后一天: ".$day[1];

1	function getdays($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");//获取当天作为参数 $day=getdays($today); echo "当月的第一天: ".$day[0]."<br/>当月的最后一天: ".$day[1];