phpInsert element to an array on a certain position

array_splice($arr, 2, 0, $insert);ctrl + cgithub

`array_splice` replaces or inserts parts of array	`$arr` array to insert new value to
`2,` position to insert new value at (starts from `0`, so we're inserting 3rd element)	`0,` don't delete any elements from original array
`$insert` value to insert

$arr = [1, 2, 3];
array_splice($arr, 2, 0, 'a');
print_r($arr);

Array
(
    [0] => 1
    [1] => 2
    [2] => a
    [3] => 3
)