1.獲取上個(gè)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/>";

2.獲取當(dāng)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/>";

3.獲取當(dāng)天年份、月份、日及天數(shù).

echo " 當(dāng)前年份:".date('Y');
echo " 當(dāng)前月份:".date('m');
echo " 當(dāng)前幾號(hào):".date('d');
echo " 本月共有:".date("t")."天";
echo "<br/>";

4.使用函數(shù)及數(shù)組來(lái)獲取當(dāng)月第一天及最后一天.

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 "當(dāng)月的第一天: ".$day[0]." 當(dāng)月的最后一天: ".$day[1];
echo "<br/>";