将时间转成几天前，几小时等的格式

将时间转成几天前，几小时等的格式，如： “1天前”，“2个月前”等。

1. function prettyDate($date){
2. $time = strtotime($date);
3. $now = time();
4. $ago = $now - $time;
5. if($ago $when = round($ago);
6. $s = ($when == 1)?"second":"seconds";
7. return "$when $s ago";
8. }elseif($ago $when = round($ago / 60);
9. $m = ($when == 1)?"minute":"minutes";
10. return "$when $m ago";
11. }elseif($ago >= 3600 && $ago $when = round($ago / 60 / 60);
12. $h = ($when == 1)?"hour":"hours";
13. return "$when $h ago";
14. }elseif($ago >= 86400 && $ago $when = round($ago / 60 / 60 / 24);
15. $d = ($when == 1)?"day":"days";
16. return "$when $d ago";
17. }elseif($ago >= 2629743.83 && $ago $when = round($ago / 60 / 60 / 24 / 30.4375);
18. $m = ($when == 1)?"month":"months";
19. return "$when $m ago";
20. }else{
21. $when = round($ago / 60 / 60 / 24 / 365);
22. $y = ($when == 1)?"year":"years";
23. return "$when $y ago";
24. }
25. }
27. echo prettyDate("2012-07-22 12:23:45")."
    ";
28. echo prettyDate("2010-11-12 22:25:45")."
    ";
29. echo prettyDate("2012-01-01 01:00:00")."
    ";
30. echo prettyDate("2001-05-30 00:00:00")."
    ";

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几天, 转成