Insert element into array

Question

I have an array

array(1) {
 [0]=>
  array(4) {
   [0]=>
   string(1) "1"
   [1]=>
   string(2) "10"
   [2]=>
   string(3) "100"
   [3]=>
   string(3) "200"
   }
}

I want to insert two element into the array which must be the 3rd and last element.

Output:

array(6) {
 [0]=>
  array(6) {
   [0]=>
   string(1) "1"
   [1]=>
   string(2) "10"
   [2]=>
   string(1) ""
   [3]=>
   string(3) "100"
   [4]=>
   string(3) "200"
   [5]=>
   string(1) ""
   }
}

how can i do this?

What I have tried

array_splice($input,3 ,0,"");

Then result become like this, the array not added in the middle

 array(6) {
 [0]=>
  array(6) {
   [0]=>
   string(1) "1"
   [1]=>
   string(2) "10"
   [2]=>
   string(1) ""
   [3]=>
   string(3) "100"
   [4]=>
   string(3) "200"
   [5]=>
   string(1) ""
   }
 [1]=>
 array(1) {
   [0]=>
   string(1) ""
 }
}

score 2 · Answer 1 · answered Oct 16 '13 at 07:27

2

To insert in the middle of array, you can use array_splice with a length of 0.

array_splice($input, 3, 0, "");

To add to the array, you can use either array_push or [] operator

answered Oct 16 '13 at 07:27

Maxim Krizhanovsky

26,265
5
59
89

The `[]` operator is preferred to push because you have no function call. – Fleshgrinder Oct 16 '13 at 07:28
1

On the other hand, array_push allows appending multiple elements with single call :) – Maxim Krizhanovsky Oct 16 '13 at 07:29
Absolutely right, plus it returns the new size, so you don't have to call `count()` on it. Always depends on the use case. :) – Fleshgrinder Oct 16 '13 at 07:31
But my output would be added as an array(1) instead of the middle of the array(0) – user2210819 Oct 16 '13 at 07:57
@user2210819 you have to operate on $input[0] in your case, as $input[0] contains the array you want to modify. – Maxim Krizhanovsky Oct 16 '13 at 08:35
May be it is an 2d array so when i added a foreach , then its ok – user2210819 Oct 16 '13 at 08:38

score 0 · Answer 2 · answered Oct 16 '13 at 07:29

0

By using array_splice you can insert element inside the array

 $array = [0 => 'Data', 1 => 'data2', 2=> 'data3'];
 array_splice($array, 1, 0, 'data append');
 var_dump($array);

answered Oct 16 '13 at 07:29

Shushant

1,625
1
13
23

Insert element into array

2 Answers2