PHP获取上周、本周、上月、本月、本季度、上季度时间

echo date("Y-m-d",strtotime("now"));echo "<br>";echo date("Y-m-d",strtotime("-1 week Monday"));echo "<br>";echo date("Y-m-d",strtotime("-1 week Sunday"));echo "<br>";echo date("Y-m-d",strtotime("+0 week Monday"));echo "<br>";echo date("Y-m-d",strtotime("+0 week Sunday"));echo "<br>";echo "*********第几个月:";echo date(‘n‘);echo "<br>";echo "*********本周周几:";echo date("w");echo "<br>";echo "*********本月天数:";echo date("t");echo "<br>";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")));echo "<br>";echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7-7,date("Y")));echo "<br>";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")));echo "<br>";echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y")));echo "<br>";//从第几周找出该周的开始日期和结束日期$dayNumber = date(‘W‘) * 7;$weekDayNumber = date("w", mktime(0, 0, 0, 1, $dayNumber, date("Y")));//当前周的第几天$startNumber = $dayNumber - $weekDayNumber;echo date("Y-m-d", mktime(0, 0, 0, 1, $startNumber + 1, date("Y")));//开始日期echo "<br>";echo date("Y-m-d", mktime(0, 0, 0, 1, $startNumber + 7, date("Y")));//结束日期echo "<br>";echo ‘<br>上月起始时间:<br>‘;echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m")-1,1,date("Y")));echo "<br>";echo date("Y-m-d H:i:s",mktime(23,59,59,date("m") ,0,date("Y")));echo ‘<br>本月起始时间:<br>‘;echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),1,date("Y")));echo "<br>";echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("t"),date("Y")));echo "<br>";$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,$season*3-3+1,1,date(‘Y‘)));echo "<br>";echo date(‘Y-m-d H:i:s‘, mktime(23,59,59,$season*3,date(‘t‘,mktime(0, 0 , 0,$season*3,1,date("Y"))),date(‘Y‘)));echo "<br>";$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,$season*3-3+1,1,date(‘Y‘)));echo "<br>";echo date(‘Y-m-d H:i:s‘, mktime(23,59,59,$season*3,date(‘t‘,mktime(0, 0 , 0,$season*3,1,date("Y"))),date(‘Y‘)));