how to sort the following php array?

Question

Question

Array ( [0] => 12w12 [1] => 13w12 [2] => 14w12 [3] => 15w12 [4] => 2w13 [5] => 3w13 [6] => 4w13 [7] => 3w12 [8] => 7w12 [9] => 9w12 )

Answer should be

Array ( [0] => 3w12 [1] => 7w12 [2] => 9w12 [3] => 12w12 [4] => 13w12 [5] => 14w12 [6] => 15w12 [7] => 2w13 [8] => 3w13 [9] =>4w13  )

2w13 is 2nd week of 2013 and 15w12 is 15th week of 2012 that's why is comes after 15w12 — user1393576
– user1393576, Commented May 15, 2012 at 6:39

Hindol · Accepted Answer · 2012-05-14 11:23:35Z

1

You can use PHP usort and write your own comparison function.

answered May 14, 2012 at 11:23

Hindol

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472084 · Accepted Answer · 2012-05-14 11:27:52Z

1

function cmp($a, $b){
    if ($a == $b) { return 0; }

    list($first1, $last1) = explode("w", $a);
    list($first2, $last2) = explode("w", $b);

    return (($last1.$first1) < ($last2.$first2)) ? -1 : 1;
}

usort($array, "cmp");

answered May 14, 2012 at 11:27

472084

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malko · Accepted Answer · 2012-05-14 11:20:34Z

-1

do a bit search on php.net for usort and make your own sorting method as what you are trying to achieve don't seem standard ordering at all

answered May 14, 2012 at 11:20

malko

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