Move an array element to a new index in PHP

Question

I\'m looking for a simple function to move an array element to a new position in the array and resequence the indexes so that there are no gaps in the sequence. It doesnt ne

Answer 1

A function that preserves keys:

function moveElementInArray($array, $toMove, $targetIndex) {
    if (is_int($toMove)) {
        $tmp = array_splice($array, $toMove, 1);
        array_splice($array, $targetIndex, 0, $tmp);
        $output = $array;
    }
    elseif (is_string($toMove)) {
        $indexToMove = array_search($toMove, array_keys($array));
        $itemToMove = $array[$toMove];
        array_splice($array, $indexToMove, 1);
        $i = 0;
        $output = Array();
        foreach($array as $key => $item) {
            if ($i == $targetIndex) {
                $output[$toMove] = $itemToMove;
            }
            $output[$key] = $item;
            $i++;
        }
    }
    return $output;
}

$arr1 = Array('a', 'b', 'c', 'd', 'e');
$arr2 = Array('A' => 'a', 'B' => 'b', 'C' => 'c', 'D' => 'd', 'E' => 'e');

print_r(moveElementInArray($arr1, 3, 1));
print_r(moveElementInArray($arr2, 'D', 1));

Ouput:

Array
(
    [0] => a
    [1] => d
    [2] => b
    [3] => c
    [4] => e
)
Array
(
    [A] => a
    [D] => d
    [B] => b
    [C] => c
    [E] => e
)