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array_merge changes the keys

I got the following array:

$arr = array(6 => 'Somedata', 7 => 'Somedata1', 8 => 'Somedata2');

The problem is that, when I use array_merge( (array) "Select the data", $arr);, it does change the array keys into:

Array
(
    [0] => Not specified
    [1] => Somedata
    [2] => Somedata1
    [3] => Somedata2
)

Is that possible to skip the array_merge key preversion so the output would look like this?

Array
(
    [0] => Not specified
    [6] => Somedata
    [7] => Somedata1
    [8] => Somedata2
)
like image 565
Sapp Avatar asked Sep 12 '12 23:09

Sapp


1 Answers

Use the + operator to create a union of the 2 arrays:

$arr = array(6 => 'Somedata', 7 => 'Somedata1', 8 => 'Somedata2');

$result = (array)'Select the data' + $arr;

var_dump($result);

Result:

array(4) {
  [0]=>
  string(15) "Select the data"
  [6]=>
  string(8) "Somedata"
  [7]=>
  string(9) "Somedata1"
  [8]=>
  string(9) "Somedata2"
}
like image 92
Jirka Kopřiva Avatar answered Sep 28 '22 02:09

Jirka Kopřiva