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&nbsp;date(&#39;Y-m-01&#39;,&nbsp;strtotime(&#39;-1&nbsp;month&#39;));
echo&nbsp;&quot;&lt;br/&gt;&quot;;
echo&nbsp;date(&#39;Y-m-t&#39;,&nbsp;strtotime(&#39;-1&nbsp;month&#39;));
echo&nbsp;&quot;&lt;br/&gt;&quot;;

echo date('Y-m-01', strtotime('-1 month'));

echo " ";

echo date('Y-m-t', strtotime('-1 month'));

echo " ";

获取当月第一天及最后一天.

$BeginDate=date(&#39;Y-m-01&#39;,&nbsp;strtotime(date(&quot;Y-m-d&quot;)));
echo&nbsp;$BeginDate;
echo&nbsp;&quot;&lt;br/&gt;&quot;;
echo&nbsp;date(&#39;Y-m-d&#39;,&nbsp;strtotime(&quot;$BeginDate&nbsp;+1&nbsp;month&nbsp;-1&nbsp;day&quot;));
echo&nbsp;&quot;&lt;br/&gt;&quot;;

$BeginDate=date('Y-m-01', strtotime(date("Y-m-d")));

echo $BeginDate;

echo " ";

echo date('Y-m-d', strtotime("$BeginDate +1 month -1 day"));

echo " ";

获取当天年份、月份、日及天数.

echo&nbsp;&quot;&nbsp;本月共有:&quot;&nbsp;.&nbsp;date(&quot;t&quot;)&nbsp;.&nbsp;&quot;天&quot;;
echo&nbsp;&quot;&nbsp;当前年份:&quot;&nbsp;.&nbsp;date(&#39;Y&#39;);
echo&nbsp;&quot;&nbsp;当前月份:&quot;&nbsp;.&nbsp;date(&#39;m&#39;);
echo&nbsp;&quot;&nbsp;当前几号:&quot;&nbsp;.&nbsp;date(&#39;d&#39;);
echo&nbsp;&quot;&lt;br/&gt;&quot;;

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 " ";

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&nbsp;getthemonth($date)&nbsp;{
&nbsp;&nbsp;&nbsp;$firstday&nbsp;=&nbsp;date(&#39;Y-m-01&#39;,&nbsp;strtotime($date));
&nbsp;&nbsp;&nbsp;$lastday&nbsp;=&nbsp;date(&#39;Y-m-d&#39;,&nbsp;strtotime(&quot;$firstday&nbsp;+1&nbsp;month&nbsp;-1&nbsp;day&quot;));
&nbsp;&nbsp;&nbsp;return&nbsp;array($firstday,&nbsp;$lastday);
}
$today&nbsp;=&nbsp;date(&quot;Y-m-d&quot;);
$day&nbsp;=&nbsp;getthemonth($today);
echo&nbsp;&quot;当月的第一天:&nbsp;&quot;&nbsp;.&nbsp;$day[0]&nbsp;.&nbsp;&quot;&nbsp;当月的最后一天:&nbsp;&quot;&nbsp;.&nbsp;$day[1];
echo&nbsp;&quot;&lt;br/&gt;&quot;;

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 " ";

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php获取当天年份、月份及当月天数，第一天最后一天等~

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