PHP merge arrays by value

Question

I know this is quite easily accomplished with a foreach, then a while->list, etc procedure, (I have already accomplished it), however I sense that my code is a bit dirty and it doesn't look like the best solution... I'm looking to use native PHP array functions to do the following:

I have two arrays that look like this:

[0] (Array)#2
  [rank] "579"
  [id] "1"
[1] (Array)#4
  [rank] "251"
  [id] "2"

[0] (Array)#2
  [size] "S"
  [status] "A"
  [id] "1"
[1] (Array)#15
  [size] "L"
  [status] "A"
  [id] "2"

And I need as a result something like the following:

[0] (Array)#2
  [size] "S"
  [status] "A"
  [id] "1"
  [rank] "579"

[1] (Array)#2
  [size] "L"
  [status] "A"
  [id] "2"
  [rank] "251"

Is there a way to be able to merge two arrays with the id value (or ay other) without going into a endless set of foreachs?

Answer 1

Use array_merge_recursive()

$array = array_merge_recursive($array1, $array2);

or make your own function (it may be faster)

function my_array_merge(&$array1, &$array2) {
    $result = Array();
    foreach($array1 as $key => &$value) {
        $result[$key] = array_merge($value, $array2[$key]);
    }
    return $result;
}
$array = my_array_merge($array1, array2);
print_r($array);