php数组更改。 如何获取数组连续值的键？

Question

I want get the keys of continuous values of an array. For example:

how to change this array:

array(
   2 => 11,
   3 => 11,
   4 => 11,
   6 => 12,
   7 => 13,
   8 => 13,
   10 => 11,
   11 => 11,
   12 => 14
)

to this one:

array(
    array(2, 3, 4),
    array(6),
    array(7, 8),
    array(10, 11),
    array(12)
)

Thx in advance!

Answer 1

$data = array(
   2 => 11,
   3 => 11,
   4 => 11,
   6 => 12,
   7 => 13,
   8 => 13,
   10 => 11,
   11 => 11,
   12 => 14
);

$result = array();
array_walk(
    $data,
    function ($value, $key) use (&$result){
        static $v;
        if ($value == $v) {
            $result[max(array_keys($result))][] = $key;
        } else {
            $result[] = array($key);
        }
        $v = $value;
    }
);

var_dump($result);