PHP获取上周、本周、上月、本月、本季度、上季度的代码

2. echo date("Ymd",strtotime("now")), "\\n";
3. echo date("Ymd",strtotime("-1 week Monday")), "\\n";
4. echo date("Ymd",strtotime("-1 week Sunday")), "\\n";
5. echo date("Ymd",strtotime("+0 week Monday")), "\\n";
6. echo date("Ymd",strtotime("+0 week Sunday")), "\\n";
8. echo "*********第几个月:";
9. echo date('n');
10. echo "*********本周周几:";
11. echo date("w");
12. echo "*********本月天数:";
13. echo date("t");
14. echo "*********";
16. echo '
    上周起始时间:
    ';
17. echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1-7,date("Y"))),"\\n";
18. echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7-7,date("Y"))),"\\n";
19. echo '
    本周起始时间:
    ';
20. echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),date("d")-date("w")+1,date("Y"))),"\\n";
21. echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y"))),"\\n";
23. echo '
    上月起始时间:
    ';
24. echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m")-1,1,date("Y"))),"\\n";
25. echo date("Y-m-d H:i:s",mktime(23,59,59,date("m") ,0,date("Y"))),"\\n";
26. echo '
    本月起始时间:
    ';
27. echo date("Y-m-d H:i:s",mktime(0, 0 , 0,date("m"),1,date("Y"))),"\\n";
28. echo date("Y-m-d H:i:s",mktime(23,59,59,date("m"),date("t"),date("Y"))),"\\n";
30. $season = ceil((date('n'))/3);//当月是第几季度
31. echo '
    本季度起始时间:
    ';
32. echo date('Y-m-d H:i:s', mktime(0, 0, 0,$season*3-3+1,1,date('Y'))),"\\n";
33. 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";
35. $season = ceil((date('n'))/3)-1;//上季度是第几季度
36. echo '
    上季度起始时间:
    ';
37. echo date('Y-m-d H:i:s', mktime(0, 0, 0,$season*3-3+1,1,date('Y'))),"\\n";
38. 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";
39. ?>

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PHP