php 返回相对时间,如:20分钟前,3天前

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经测试代码如下:
  1. /**
  2. * 友好时间显示
  3. *
  4. * @param
  5. * @arrange (512.笔记) jb51.cc
  6. **/
  7. function plural($num) {
  8. if ($num != 1)
  9. return "s";
  10. }
  11. function getRelativeTime($date) {
  12. $diff = time() - strtotime($date);
  13. if ($diff<60)
  14. return $diff . " second" . plural($diff) . " ago";
  15. $diff = round($diff/60);
  16. if ($diff<60)
  17. return $diff . " minute" . plural($diff) . " ago";
  18. $diff = round($diff/60);
  19. if ($diff<24)
  20. return $diff . " hour" . plural($diff) . " ago";
  21. $diff = round($diff/24);
  22. if ($diff<7)
  23. return $diff . " day" . plural($diff) . " ago";
  24. $diff = round($diff/7);
  25. if ($diff<4)
  26. return $diff . " week" . plural($diff) . " ago";
  27. return "on " . date("F j,Y",strtotime($date));
  28. }

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