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$week_begin = mktime(0, 0, 0,date("m"),date("d")-date("w")+1,date("Y")); $week_end = mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y")); echo $week_begin.'==='.date('y-m-d H:i:s',$week_begin); echo '<br />'; echo $week_end.'==='.date('y-m-d H:i:s',$week_end); echo '<br />'; 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"; //date('n') 第几个月 //date("w") 本周周几 //date("t") 本月天数 echo '<br>昨日:<br>'; echo date("Y-m-d H:i:s",mktime(0,0,0,date("m"),date("d")-date("w")+7-7,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>本日:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0, 0,date("m"),date("d"),date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d"),date("Y"))),"\n"; echo '<br>明天:<br>'; echo date("Y-m-d H:i:s",mktime(0, 0, 0,date("m"),date("d")+1,date("Y"))),"\n"; echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")+1,date("Y"))),"\n"; echo '<br>上周:<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:<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:<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:<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"; $getMonthDays = date("t",mktime(0, 0, 0,date('n')+(date('n')-1)%3,1,date("Y")));//本季度未最后一月天数 echo '<br>本季度:<br>'; echo date('Y-m-d H:i:s', mktime(0, 0, 0,date('n')-(date('n')-1)%3,1,date('Y'))),"\n"; echo date('Y-m-d H:i:s', mktime(23,59,59,date('n')+(date('n')-1)%3,$getMonthDays,date('Y'))),"\n"; $season = ceil((date('n'))/3);//当月是第几季度 echo '<br>本季度:<br>'; echo date('Y-m-d H:i:s', mktime(0, 0, 0,$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"; $season = ceil((date('n'))/3)-1;//上季度是第几季度 echo '<br>上季度:<br>'; echo date('Y-m-d H:i:s', mktime(0, 0, 0,$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"; echo '<br>四舍五入:<br>'; echo sprintf("%.2f",36.8956); php两个日期相减得天数 <?php function count_days($a,$b){ $a_dt=getdate($a); $b_dt=getdate($b); $a_new=mktime(12,0,0,$a_dt['mon'],$a_dt['mday'],$a_dt['year']); $b_new=mktime(12,0,0,$b_dt['mon'],$b_dt['mday'],$b_dt['year']); return round(abs($a_new-$b_new)/3600/24); } function count_days($formdate,$todate){ return round(abs(strtotime($formdate)-strtotime($todate))/3600/24); } |
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