PHP获得指定日期所在星期,所在月的第一天和最后一天

<p>function getdays($day){</p>	$lastday=date('Y-m-d',strtotime("$day Sunday"));<br />	$firstday=date('Y-m-d',strtotime("$lastday -6 days"));<br />	return array($firstday,$lastday);<br />}<br /><p>print_r(getdays('2012-06-2'));</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p>
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<p>function getdays($day){</p>	$firstday = date('Y-m-01',strtotime($day));<br />	$lastday = date('Y-m-d',strtotime("$firstday +1 month -1 day"));<br />	return array($firstday,$lastday);<br /><br />}<br />print_r(getdays('2012-06-2'));