Restructure multidimensional array of column data into multidimensional array of row data

Question

I have the following associative array of column data:

$where = array(
    'id'=>array(
        12,
        13,
        14
    ),
    'date'=>array(
        '1999-06-12',
        '2000-03-21',
        '2006-09-31'
    )
);

I need to transpose / rotate the structure to be an array of rows (with merged column data assigned to their respective row). I don't need the column names in the result.

Expected output:

$comb = array(
    array(12, '1999-06-12'),
    array(13, '2000-03-21'),
    array(14, '2006-09-31')
);

Answer 1

As Kris Roofe stated in his deleted answer, array_column is indeed a more elegant way. Just be sure to put it into some kind of a foreach loop, similar to what Sahil Gulati showed you. For example, like this:

$result = array();

foreach($where['id'] as $k => $v)
{
  $result[] = array_column($where, $k);
}

The var_dump output of $result is exactly what you're looking for

array(3) {
  [0]=>
  array(2) {
    [0]=>
    int(12)
    [1]=>
    string(10) "1999-06-12"
  }
  [1]=>
  array(2) {
    [0]=>
    int(13)
    [1]=>
    string(10) "2000-03-21"
  }
  [2]=>
  array(2) {
    [0]=>
    int(14)
    [1]=>
    string(10) "2006-09-31"
  }
}