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  1. <?php
  2. $array = [1,1,1,2,2,3,3,1,1,2,2,3];
  3. $result = [];
  4. $carry = [];
  5. foreach ($array as $value) {
  6.     if ($carry && key($carry) === $value) {
  7.         ++$carry[$value];
  8.     } else {
  9.         unset($carry);
  10.         $carry = [$value => 1];
  11.         $result[] =& $carry;
  12.     }
  13. }
  14. unset($carry);
  15. print_r($result);
Success #stdin #stdout 0.03s 24228KB
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Array
(
    [0] => Array
        (
            [1] => 3
        )

    [1] => Array
        (
            [2] => 2
        )

    [2] => Array
        (
            [3] => 2
        )

    [3] => Array
        (
            [1] => 2
        )

    [4] => Array
        (
            [2] => 2
        )

    [5] => Array
        (
            [3] => 1
        )

)
https://ideone.com/U5maG0
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
secret

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