code example for PHP to calculate the year, month, week, and day of two date intervals

Source: Internet
Author: User
  1. /**

  2. * Calculates the year, month, week, and day of two date intervals
  3. * Edit bbs.it-home.org
  4. */
  5. function format ($a, $b) {
  6. Check the two date size, the default is small after large, if the former large after the small swap position to ensure that the former small after large
  7. if (Strtotime ($a) >strtotime ($b)) list ($a, $b) =array ($b, $a);
  8. $start = Strtotime ($a);
  9. $stop = Strtotime ($b);
  10. $extend = ($stop-$start)/86400;
  11. $result [' extends '] = $extend;
  12. if ($extend <7) {//if less than 7 days direct return days
  13. $result [' daily '] = $extend;
  14. }elseif ($extend <=31) {///less than 28 days returns the number of weeks, as leap year February satisfies
  15. if ($stop ==strtotime ($a. ' +1 month ')) {
  16. $result [' monthly '] = 1;
  17. }else{
  18. $w = Floor ($extend/7);
  19. $d = ($stop-strtotime ($a. ' + '. $w. ' Week ')/86400;
  20. $result [' weekly '] = $w;
  21. $result [' daily '] = $d;
  22. }
  23. }else{
  24. $y = Floor ($extend/365);
  25. if ($y >=1) {//If more than one year
  26. $start = Strtotime ($a. ' + '. $y. ' year ');
  27. $a = date (' y-m-d ', $start);
  28. Judging whether it really has been a year, if not, then cut
  29. if ($start > $stop) {
  30. $a = date (' y-m-d ', strtotime ($a. '-1 month '));
  31. $m = 11;
  32. $y--;
  33. }
  34. $extend = ($stop-strtotime ($a))/86400;
  35. }
  36. if (Isset ($m)) {
  37. $w = Floor ($extend/7);
  38. $d = $extend-$w *7;
  39. }else{
  40. $m = Isset ($m)? $m: Round ($extend/30);
  41. $stop >=strtotime ($a. ' + '. $m. ' Month ')? $m: $m-;
  42. if ($stop >=strtotime ($a. ' + '. $m. ' Month ')} {
  43. $d = $w = ($stop-strtotime ($a. ' + '. $m. ' Month ')/86400;
  44. $w = Floor ($w/7);
  45. $d = $d-$w *7;
  46. }
  47. }
  48. $result [' yearly '] = $y;
  49. $result [' monthly '] = $m;
  50. $result [' weekly '] = $w;
  51. $result [' daily '] = Isset ($d)? $d: null;
  52. }
  53. Return Array_filter ($result);
  54. }

  55. Print_r (Format (' 2012-10-1 ', ' 2012-12-15 '));

  56. ?>

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Output result: Array ([extends]=>75[monthly]=>2[weekly]=>2)

2,php Query the number of weeks in a day and the start date of the corresponding week

    1. /**
    2. * @file
    3. * @version 1.1
    4. */
    5. Gets the week number of a date, the start end time for the week
    6. Private Function Getweekstartendday ($day)
    7. {
    8. $g = strftime ("%u", Strtotime ($day));
    9. Return Array (' Week_num ' =>strftime ("%V", Strtotime ($day)), ' Week_start_day ' =>strftime ('%y-%m-%d ', Strtotime ($ Day)-($g-1) *86400), ' WEEK_START_DAY_CN ' =>strftime ('%y year%m month%d ', Strtotime ($day)-($g-1) *86400), ' week_end_day ' = >strftime ('%y-%m-%d ', Strtotime ($day) + (7-$g) *86400), ' WEEK_END_DAY_CN ' =>strftime ('%Y year%m month%d day ', Strtotime ($ Day) + (7-$g) *86400));
    10. }
    11. ?>
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