array sorting

moiseszaragoza

array sorting
I have a array that holds 2 values a userid and a score.

but i want to show the hiest scores on top.
but its not working. this is what i am trying

PHP Code:

$array_userid_score['score'][$count_userid_score]     = 1;
$array_userid_score['users_id'][$count_userid_score]     = 0;

$array_userid_score['score'][$count_userid_score]     = 10;
$array_userid_score['users_id'][$count_userid_score]     = 1;

$array_userid_score['score'][$count_userid_score]     = 9;
$array_userid_score['users_id'][$count_userid_score]     = 2;

$array_userid_score['score'][$count_userid_score]     = 15;
$array_userid_score['users_id'][$count_userid_score]     = 3;

$array_userid_score['score'][$count_userid_score]     = 6;
$array_userid_score['users_id'][$count_userid_score]     = 4;

asort ($array_userid_score);

But I am not getting it by the score

Thanks for the help

cahva

Well I think you should change your array a little bit. You could easily just do this:

$scores = array();

$scores[0] = 1;
$scores[1] = 10;
$scores[2] = 9;
$scores[3] = 15;
$scores[4] = 6;

arsort($scores);

echo '<pre>'.print_r($scores,true).'</pre>';

..will print:

Array
(
    [3] => 15
    [1] => 10
    [2] => 9
    [4] => 6
    [0] => 1
)

Key would be the user_id and value would be the score.

Weedpacket

That's because your scores are in sub-arrays that are stored in a parent array, but you're only sorting the parent array.

PHP's most flexible array sorting functions are those starting with "u"; but to use any of them you'll need to do a lot more work, because you're actually wanting to sort two arrays - $array_userid_score['score'] and $array_userid_score['users_id'] - based on the values in one of them.

Or you can fix the structure like so:

$array_userid_score[$count_userid_score]['score']     = 1;
$array_userid_score[$count_userid_score]['users_id']     = 0;

$array_userid_score[$count_userid_score]['score']     = 10;
$array_userid_score[$count_userid_score]['users_id']     = 1;

$array_userid_score[$count_userid_score]['score']     = 9;
$array_userid_score[$count_userid_score]['users_id']     = 2;

$array_userid_score[$count_userid_score]['score']     = 15;
$array_userid_score[$count_userid_score]['users_id']     = 3;

$array_userid_score[$count_userid_score]['score']     = 6;
$array_userid_score[$count_userid_score]['users_id']     = 4;

And keep ids and scores together.

moiseszaragoza

cahva;10939639 wrote:
Well I think you should change your array a little bit. You could easily just do this:
$scores = array();

$scores[0] = 1;
$scores[1] = 10;
$scores[2] = 9;
$scores[3] = 15;
$scores[4] = 6;

arsort($scores);

echo '<pre>'.print_r($scores,true).'</pre>';
..will print:
Array
(
    [3] => 15
    [1] => 10
    [2] => 9
    [4] => 6
    [0] => 1
)
Key would be the user_id and value would be the score.

Thanks,
That was really helpfull but i really neef to keep the score with its user.

moiseszaragoza

Weedpacket;10939640 wrote:
That's because your scores are in sub-arrays that are stored in a parent array, but you're only sorting the parent array.

PHP's most flexible array sorting functions are those starting with "u"; but to use any of them you'll need to do a lot more work, because you're actually wanting to sort two arrays - $array_userid_score['score'] and $array_userid_score['users_id'] - based on the values in one of them.

Or you can fix the structure like so:
$array_userid_score[$count_userid_score]['score']     = 1;
$array_userid_score[$count_userid_score]['users_id']     = 0;

$array_userid_score[$count_userid_score]['score']     = 10;
$array_userid_score[$count_userid_score]['users_id']     = 1;

$array_userid_score[$count_userid_score]['score']     = 9;
$array_userid_score[$count_userid_score]['users_id']     = 2;

$array_userid_score[$count_userid_score]['score']     = 15;
$array_userid_score[$count_userid_score]['users_id']     = 3;

$array_userid_score[$count_userid_score]['score']     = 6;
$array_userid_score[$count_userid_score]['users_id']     = 4;
And keep ids and scores together.

Thanks for pointing that up for me .
I it was really helpfulll