自己写的 做了兼容处理，后续获取其他时间慢慢增加 ~~~ echo "当前时间<br />"; echo date('Y-m-d H:i:s',time())."<br />"; echo "当前周的第几天<br />"; echo date('w',time())."<br />"; echo "当前周的开始时间<br />"; echo date('Y-m-d H:i:s',strtotime(date('Y-m-d',time()))+86400-(date('w',time()) == 0 ? (7 * 86400): (date('w',time()) * 86400))); echo "当前周的结束时间<br />"; echo date('Y-m-d H:i:s',strtotime(date('Y-m-d',time()))+86400+(date('w',time()) == 0 ? 0 : ((7-date('w',time())) * 86400))-1); ~~~ //仅供参考 下面是我百度的 但是有一些问题，不建议使用 ~~~ <?php /**date 2015-04-11 * author http://www.lai18.com **/ echo date("Ymd",strtotime("now")), "\n"; echo date("Ymd",strtotime("-1 week Monday")), "\n"; echo date("Ymd",strtotime("-1 week Sunday")), "\n"; echo date("Ymd",strtotime("+0 week Monday")), "\n"; echo date("Ymd",strtotime("+0 week Sunday")), "\n"; echo "*********第几个月:"; echo date('n'); echo "*********本周周几:"; echo date("w"); echo "*********本月天数:"; echo date("t"); echo "*********"; echo '<br>上周起始时间:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1-7,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7-7,date("Y"))),"\n"; echo '<br>本周起始时间:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y"))),"\n"; echo '<br>上月起始时间:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m")-1,1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m") ,0,date("Y"))),"\n"; echo '<br>本月起始时间:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("t"),date("Y"))),"\n"; $season = ceil((date('n'))/3);//当月是第几季度 echo '<br>本季度起始时间:<br>'; echo date('Y-m-d H:i:s', mktime(0, 0, 0,$season*3-3+1,1,date('Y'))),"\n"; echo date('Y-m-d H:i:s', mktime(23,59,59,$season*3,date('t',mktime(0, 0 , 0,$season*3,1,date("Y"))),date('Y'))),"\n"; $season = ceil((date('n'))/3)-1;//上季度是第几季度 echo '<br>上季度起始时间:<br>'; echo date('Y-m-d H:i:s', mktime(0, 0, 0,$season*3-3+1,1,date('Y'))),"\n"; echo date('Y-m-d H:i:s', mktime(23,59,59,$season*3,date('t',mktime(0, 0 , 0,$season*3,1,date("Y"))),date('Y'))),"\n"; ?> ~~~