Как вывести самый часто встречаемый элемент в массиве?

Question

[veryYoung]

есть массив данных, с вк, полученный wall.getReposts, как получить, так сказать, топ репостера, то есть как вывести элемент массива (from_id), значение которого чаще всего встречается в массиве?
один элемент массива

spoiler

Array (
[items] => Array (
[0] => Array (
[id] => 791
[from_id] => 4092108
[to_id] => 4092108
[date] => 1560265172
[post_type] => post
[text] =>
[copy_history] => Array (
[0] => Array (
[id] => 4637
[owner_id] => -758967
[from_id] => -758967
[date] => 1560175291
[post_type] => post
[text] => текст поста
[attachments] => Array (
[0] => Array (
[type] => photo
[photo] => Array (
[id] => 4562433
[album_id] => -7
[owner_id] => -758967
[user_id] => 100
[sizes] => Array (
[0] => Array (
[type] => m [url] => https://pp.userapi.com/c854128/v854128765/664de/i9...
[width] => 130
[height] => 86
)
[1] => Array (
[type] => o
[url] => https://pp.userapi.com/c854128/v854128765/664e0/9z...
[width] => 130
[height] => 87
)
[2] => Array (
[type] => p
[url] => https://pp.userapi.com/c854128/v854128765/664e1/CQ...
[width] => 200
[height] => 133
)
[3] => Array (
[type] => q
[url] => https://pp.userapi.com/c854128/v854128765/664e2/8I...
[width] => 320
[height] => 213
)
[4] => Array (
[type] => r
[url] => https://pp.userapi.com/c854128/v854128765/664e3/l7...
[width] => 510
[height] => 340
)
[5] => Array (
[type] => s
[url] => https://pp.userapi.com/c854128/v854128765/664dd/ST...
[width] => 75
[height] => 50
)
[6] => Array (
[type] => x
[url] => https://pp.userapi.com/c854128/v854128765/664df/Cq...
[width] => 585
[height] => 389
)
)
[text] =>
[date] => 1560178731
[access_key] => 450a267bb30f7
)
)
)
[post_source] => Array (
[type] => vk
)
)
)
[post_source] => Array (
[type] => vk
)
[comments] => Array (
[count] => 0
[can_post] => 1
[groups_can_post] => 1
)
[likes] => Array (
[count] => 0
[user_likes] => 0
[can_like] => 1
[can_publish] => 1
)
[reposts] => Array (
[count] => 0

[
user_reposted] => 0
)
[views] => Array (
[count] => 10
)
[is_favorite] =>
)
)
[profiles] => Array (
[0] => Array (
[id] => 409210
[first_name] => Имя
[last_name] => Фамилия
[is_closed] =>
[can_access_closed] => 1
[sex] => 1
[screen_name] => id4092108
[photo_50] => https://pp.userapi.com/c636631/v636631873/4e074/ZT...
[photo_100] => https://pp.userapi.com/c636631/v636631873/4e073/rW...
[online] => 0
)
)
[groups] => Array (
[0] => Array (
[id] => 758967
[name] => test
[screen_name] => ugfuigfcuyg
[is_closed] => 0
[type] => group
[is_admin] => 1
[admin_level] => 3
[is_member] => 1
[is_advertiser] => 1
[photo_50] => https://sun1-85.userapi.com/c638127/v638127093/55f...
[photo_100] => https://sun1-86.userapi.com/c638127/v638127093/55f...
[photo_200] => https://sun1-15.userapi.com/c638127/v638127093/55f...
)
)
)
1

Comments

[0xD34F]

Вопрос следует дополнить примером исходных данных.

[veryYoung]

Array (
    [items] => Array ( 
          [0] => Array (
              [id] => 791
             [from_id] => 4092108
             [to_id] => 4092108
             [date] => 1560265172
             [post_type] => post 
             [text] =>
             [copy_history] => Array ( 
                     [0] => Array ( 
                         [id] => 4637 
                         [owner_id] => -758967
                        [from_id] => -758967
                        [date] => 1560175291
                        [post_type] => post
                         [text] => текст поста
                         [attachments] => Array (
                                 [0] => Array (
                                     [type] => photo 
                                     [photo] => Array ( 
                                              [id] => 4562433
                                              [album_id] => -7 
                                              [owner_id] => -758967
                                              [user_id] => 100 
                                              [sizes] => Array (
                                                   [0] => Array (
                                                      [type] => m [url] => https://pp.userapi.com/c854128/v854128765/664de/i9AuN2Fnk.jpg 
                                                       [width] => 130
                                                       [height] => 86
                                                )
                                            [1] => Array (
                                               [type] => o 
                                               [url] => https://pp.userapi.com/c854128/v854128765/664e0/9zu0Q_EeM.jpg
                                               [width] => 130
                                               [height] => 87 
                                              )
                                           [2] => Array ( 
                                               [type] => p
                                               [url] => https://pp.userapi.com/c854128/v854128765/664e1/CQkNEogA.jpg 
                                               [width] => 200
                                               [height] => 133
                                              ) 
                                            [3] => Array ( 
                                               [type] => q
                                                [url] => https://pp.userapi.com/c854128/v854128765/664e2/8IxnCJCMg.jpg 
                                                [width] => 320 
                                                [height] => 213
                                             ) 
                                           [4] => Array ( 
                                                 [type] => r 
                                                 [url] => https://pp.userapi.com/c854128/v854128765/664e3/l7NOBlsOU.jpg 
                                                [width] => 510
                                                [height] => 340
                                             )
                                          [5] => Array ( 
                                                [type] => s 
                                                [url] => https://pp.userapi.com/c854128/v854128765/664dd/STLzERbLI.jpg 
                                                [width] => 75
                                                [height] => 50
                                          ) 
                                       [6] => Array (
                                                [type] => x
                                                [url] => https://pp.userapi.com/c854128/v854128765/664df/CqqpxEcHg.jpg 
                                                [width] => 585 
                                                [height] => 389
                             )
                       ) 
                    [text] => 
                    [date] => 1560178731 
                    [access_key] => 450a267bb30f7
            )
         )
     )
   [post_source] => Array ( 
      [type] => vk 
     )
   )
  ) 
 [post_source] => Array ( 
   [type] => vk
  )
  [comments] => Array (
   [count] => 0 
   [can_post] => 1 
   [groups_can_post] => 1 
  )
  [likes] => Array ( 
   [count] => 0 
   [user_likes] => 0 
   [can_like] => 1
   [can_publish] => 1
  )
 [reposts] => Array (
   [count] => 0 
   
 [
user_reposted] => 0 
)
 [views] => Array ( 
   [count] => 10
 )
 [is_favorite] =>
 )
 )
 [profiles] => Array (
 [0] => Array (
   [id] => 409210
   [first_name] => Имя
   [last_name] => Фамилия
   [is_closed] =>
   [can_access_closed] => 1 
   [sex] => 1 
   [screen_name] => id4092108
   [photo_50] => https://pp.userapi.com/c636631/v636631873/4e074/ZTCyE3y3c.jpg?ava=1 
   [photo_100] => https://pp.userapi.com/c636631/v636631873/4e073/rW3GGGpRg.jpg?ava=1
   [online] => 0
   )
  )
 [groups] => Array (
   [0] => Array ( 
  [id] => 758967 
   [name] => test
   [screen_name] => ugfuigfcuyg
   [is_closed] => 0
   [type] => group
   [is_admin] => 1 
   [admin_level] => 3 
   [is_member] => 1
   [is_advertiser] => 1 
   [photo_50] => https://sun1-85.userapi.com/c638127/v638127093/55fbb/LZ3FFZQI.jpg?ava=1 
   [photo_100] => https://sun1-86.userapi.com/c638127/v638127093/55fba/G2U_r0yY.jpg?ava=1 
   [photo_200] => https://sun1-15.userapi.com/c638127/v638127093/55fb9/ZSeET-J0.jpg?ava=1 
  )
 )
)
1

1 элемент массива

[DanKud]

$arr = ваш_массив;

function getTopID($arr)
{
    $arr = array_count_values(array_map(function($n) {
        return $n['from_id'];
    }, $arr['items']));
    arsort($arr);
    foreach($arr as $k => $v) {
        return $k;
    }
}

$id = getTopID($arr);

print_r($id);

[veryYoung]

DanKud, выводит 1

[Дмитрий]

veryYoung, вот эту "портянку" необходимо обязательно добавить в вопрос и спрятать под "спойлер"

Answer 1

[dollar]

Посчитать

$arr = [1,2,3,4,5,5,4,1,2,1,2,5,2,2,3,2];
$cnt = [];
foreach ($arr as $val) { //Считаем
	$cnt[$val] = @$cnt[$val] + 1;
}
print_r($cnt);

$answer = 0;
$max = 0;
foreach ($cnt as $key=>$val) if ($val > $max) { //Ищем максимум
    $max = $val;
    $answer = $key;
}
print_r('Answer: '.$answer);

Comments

[veryYoung]

что-то выводит, не то что нужно...(

[dollar]

А вы принцип поняли? Или просто копируете код?
Говоря "посчитать" я имел в виду, что именно вы должны посчитать. И привел пример, как это может быть, а не готовый код, который можно использовать, не вникая.

[veryYoung]

dollar, я понял, что пример... как бы, заметил, что в коде не указано, что именно считать...

[dollar]

veryYoung, считается самый частый элемент в массиве $arr.
Это цифра 2.
Вот она и выводится.
Сначала промежуточный массив, где считаются вообще все элементы. А потом ответ.

[dollar]

Алгоритм есть.
Дальше дело техники, если вы хоть самую малость разбираетесь в php.

Answer 2

[hesy]

Привет, актуально?

https://3v4l.org/DHrDI

Comments

[veryYoung]

спасибо, уже сам разобрался) но все равно спасибо!