如何将单个xml对象转换为数组

function xmlToArray($xml) {
    $result = array();
    
    foreach ($xml->children() as $child) {
        $childData = array();
        
        if ($child->children()->count() > 0) {
            $childData = xmlToArray($child);
        } else {
            $childData = (string)$child;
        }
        
        $result[$child->getName()][] = $childData;
    }
    
    return $result;
}

$xmlString = '<root>
    <item>Item 1</item>
    <item>Item 2</item>
    <item>Item 3</item>
</root>';

$xml = simplexml_load_string($xmlString);
$array = xmlToArray($xml);

print_r($array);

Array
(
    [root] => Array
        (
            [0] => Array
                (
                    [item] => Array
                        (
                            [0] => Item 1
                            [1] => Item 2
                            [2] => Item 3
                        )
                )
        )
)