PHP sorting arrays by subarray key groups

Question

I am trying to group elements of variable array called $list with subarrays with random subarray order like:

$list = array(
    1 => array('number' => 1),
    2 => array('title' => 'Title One'),
    3 => array('text' => 'Text One'),

    4 => array('title' => 'Title Two'),
    5 => array('number' => 2),
    6 => array('text' => 'Text Two'),

    7 => array('text' => 'Text Three'),
    8 => array('title' => 'Title Three'),
    9 => array('number' => 3),
);

How can I group them into

Array
(
    [0] => Array
        (
            [number] => 1
            [title] => Title One
            [text] => Text One
        )

    [1] => Array
        (
            [title] => Title Two
            [number] => 2
            [text] => Text Two
        )

    [2] => Array
        (
            [text] => Text Three
            [title] => Title Three
            [number] => 3
        )

)

Important Note:

1. The subarray keys can be any string, not just 'title', 'text', 'number'. Meaning I can have 1 or more elements, it's not predefined to 3 ('title', 'text', 'number') in this case.
2. The result order within each [0], [1], [2]... groups doesn't matter as long as they are grouped together.

Answer 1

Try this out ,

array_chunk($list,3,true);

Answer 2

You can do the following:

$keyCount = array();
$finalArray = array();

foreach($list as $value) {
    $temp = key($value);
    $currentKey = $temp[0];
    $count = isset($keyCount[$currentKey]) ? $keyCount[$currentKey]: 0;
    $keyCount[$currentKey] = $count + 1;
    $finalArray[$count] = isset($finalArray[$count]) ? $finalArray[$count] : array();
    $finalArray[$count][$currentKey] = $value[$currentKey];
}