Convert an array to XML or JSON

Question

I want to convert the array below

Array
(
    [city] => Array
        (
            [0] => Array
                (
                    [0] => Rd
                    [1] => E
                )

            [1] => B
            [2] => P
            [3] => R
            [4] => S
            [5] => G
            [6] => C
        )

    [dis] => 1.4
)

into XML format or JSON. Someone may help please?

Answer 1

This works for associative arrays.

    function array2xml($array, $node_name="root") {
    $dom = new DOMDocument('1.0', 'UTF-8');
    $dom->formatOutput = true;
    $root = $dom->createElement($node_name);
    $dom->appendChild($root);

    $array2xml = function ($node, $array) use ($dom, &$array2xml) {
        foreach($array as $key => $value){
            if ( is_array($value) ) {
                $n = $dom->createElement($key);
                $node->appendChild($n);
                $array2xml($n, $value);
            }else{
                $attr = $dom->createAttribute($key);
                $attr->value = $value;
                $node->appendChild($attr);
            }
        }
    };

    $array2xml($root, $array);

    return $dom->saveXML();
}