Question

[0] => Array
        (
            [2148] => 2
            [2149] => 1
            [2150] => 0
        )
[1] => Array
        (
            [2148] => 4
            [2119] => 1
            [2130] => 0
        )

So something like this would be awesome:

[array_complete] => Array
        (
            [2148] => array(2,4)
            [2149] => 1
            [2150] => 0
            [2119] => 1
            [2130] => 0
        )

Looking into array push etc but not entirely sure.

Answer 1

Use array_merge_recursive after turning your array keys into non numeric ones. If you use this as is, the conflicting keys will simply be renumbered.

So overall:

$arr1 = array("a2148"=> 2, "a2149" => 1, "a2150" => 0);
$arr2 = array("a2148" => 4,"a2119" => 1, "a2130" => 0);
var_dump(array_merge_recursive($arr1,$arr2));

Output:

array(5) {
  ["a2148"]=>
  array(2) {
    [0]=>
    int(2)
    [1]=>
    int(4)
  }
  ["a2149"]=>
  int(1)
  ["a2150"]=>
  int(0)
  ["a2119"]=>
  int(1)
  ["a2130"]=>
  int(0)
}

Here is a demonstration: http://codepad.org/k8zvK0nL