Question

I have been able to search a multidimensional array like

Array
(
    [0] => Array
        (
            [size] => 39
            [colour] => N/A
            [quantity] => 5
        )

    [1] => Array
        (
            [size] => 35
            [colour] => N/A
            [quantity] => 5
        )

    [2] => Array
        (
            [size] => 40
            [colour] => N/A
            [quantity] => 5
        )

    [3] => Array
        (
            [size] => 30
            [colour] => N/A
            [quantity] => 5
        )

)

And return the matching an array of matches like this

Array
(
    [size] => 35
    [colour] => N/A
    [quantity] => 5
)

using this snippet

$result = array();
foreach ($multi_array as $arr) {
  if ($arr['size'] == $one_dimen_arr['size'] && $arr['colour'] == $one_dimen_arr['colour']) {
    $result = $arr;
    break;
  }
}

is it possible to remove the match from the master multidimensional array and replace with an updated array in that position?

Answer 1

Try it like this

$result = array();
foreach ($multi_array as $key => $arr) {
  if (
     $arr['size'] == $one_dimen_arr['size'] && 
     $arr['colour'] == $one_dimen_arr['colour']
  ) {
    $result = $arr;
    unset($multi_array[$key])  //to remove the matching array
    $multi_array[$key] = $yourUpdatedArr; //to update the values
    break;
  }
}