inseting/shifting in the middle of array

[nielskg]

Say I have an array like this :

$array = array (0 => "one", 2 => "red", 3 => "four");

Now I want to insert a value "three" on key '3' shifting the rest of the value's (in this case "four") up one key so I'de get :

$array = array (0 => "one", 2 => "red", 3 => "three", 4 => "four");

Is there a function for this? Or else how do I do this?

Thanx,
Niels

[Anon]

You'll have to create a new array, and copy the old values to the new array. When you get to the index where you want to add the new element, you add the new item and then keep on copying the rest of the array.

Diego

[Anon]

Here is a sample:

function insertArray($i, $value, $actArray) {
$tmpArray = array();
for($k=0; $k < $i; $k++)
$tmpArray[] = $actArray[$k];
$tmpArray[$i] = $value;
for($k=$i+1; $k <= count($actArray); $k++)
$tmpArray[$k] = $actArray[$k-1];
return $tmpArray;
}

$i, the index where you want the value.
$value, yes its the val 😉
$actArray, the array you want to merge.