php 获取日期(当天，前天，明天，本周，本月，本季度，本年)

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<?php

echo "<meta http-equiv=‘Content-Type‘ content=‘text/html; charset=UTF-8‘>";

$begin_day
= date("Y-m-d 00:00:00");

$end_day
= date("Y-m-d 23:59:59");

$last_begin
= date("Y-m-d 00:00:00",strtotime("last days"));

$last_end
= date("Y-m-d 23:59:59",strtotime("last days"));

$next_begin
= date("Y-m-d 00:00:00",strtotime("next days"));

$next_end
= date("Y-m-d 23:59:59",strtotime("next days"));

$month_times
= strtotime(date("Y-m"));

$monthday
= date("t");

$month
= date("n");

$begin_this_week=date("Y-m-d 00:00:00",strtotime("last Sunday +1 day"));

$end_this_week=date("Y-m-d 23:59:59",strtotime("next Sunday"));

$begin_this_month=date(‘Y-m-01 00:00:00‘);

$end_this_month=date("Y-m-$monthday 23:59:59",strtotime("this month",$month_times));

if($month==1 || $month==2 ||$month==3){

 $begin_this_quarter=date(‘Y-01-01 00:00:00‘);

 $end_this_quarter=date("Y-03-31 23:59:59");

}elseif($month==4 || $month==5 ||$month==6){

 $begin_this_quarter=date(‘Y-04-01 00:00:00‘);

 $end_this_quarter=date("Y-06-30 23:59:59"); 

}elseif($month==7 || $month==8 ||$month==9){

 $begin_this_quarter=date(‘Y-07-01 00:00:00‘);

 $end_this_quarter=date("Y-09-30 23:59:59"); 

}else{

 $begin_this_quarter=date(‘Y-10-01 00:00:00‘);

 $end_this_quarter=date("Y-12-31 23:59:59");   

}

$begin_this_year=date(‘Y-01-01 00:00:00‘);

$end_this_year=date(‘Y-12-31 23:59:59‘);

//一季度是1月1日到3月31日；二季度是4月1日到6月30；三季度是7月1到9月30；四季度是10月1到12月31

echo
"{$begin_day}当天{$end_day} <br/>";

echo
"{$last_begin}前天{$last_end} <br/>";

echo
"{$next_begin}明天{$next_end} <br/>";

echo
"{$begin_this_week}本周{$end_this_week} <br/>";

echo
"{$begin_this_month}本月{$end_this_month} <br/>";

echo
"{$begin_this_quarter}本季度{$end_this_quarter} <br/>";

echo
"{$begin_this_year}本年{$end_this_year} <br/>";