PHP - Copy a multidimensional array by grouping its keys according to the index of values

I have multidimensional array which looks like this. This is my snippet down below:

$tyreSpec = array(
    'width_id' => array(
        0 => '8',
        1 => '24'
    ),
    'profile_id' => array(
        0 => '8',
        1 => '13'
    ),
    'diameter_id' => array(
        0 => '4',
        1 => '13'
    ),
    'speed_id' => array(
        0 => '6',
        1 => '13'
    ),
    'load_id' => array(
        0 => '12',
        1 => '31'
    )
);

How can I create an array like this from the above one?

$toDb = array (
    array(
          'width_id' => 8,
          'profile_id' => 8,
          'diameter_id' => 4,
          'speed_id' => 6,
          'load_id' => 12
    ),
    array(
          'width_id' => 24,
          'profile_id' => 13,
          'diameter_id' => 13,
          'speed_id' => 13,
          'load_id' => 31
    )
);

This is my code down below I can't get it done:

$ToDb = array();
//$i = 0;
$count = 0;
foreach($tyreSpec as $row ) {
    $count = count($row);
}

for($i = 0; $i < $count; $i++) {
    foreach($tyreSpec as $row) {
        array_push($ToDb, $row[$i]);
    }
}

---

You can use two simple loops to achieve your goal:

$toDb = array();
foreach ($tyreSpec as $key=>$val) {
    for ($i=0; $i<count($val); ++$i)
        $toDb[$i][$key] = $val[$i];
}