PHP DOM XML到arrray的转换

function convertDOMtoArr($node) {
    $output = array();
    
    if ($node->nodeType == XML_TEXT_NODE) {
        $output = trim($node->nodeValue);
        return $output;
    }
    
    if ($node->hasAttributes()) {
        $attributes = array();
        
        foreach ($node->attributes as $attr) {
            $attributes[$attr->name] = $attr->value;
        }
        
        $output['attributes'] = $attributes;
    }
    
    if ($node->hasChildNodes()) {
        $children = array();
        
        foreach ($node->childNodes as $child) {
            $childOutput = convertDOMtoArr($child);
            
            if (is_array($childOutput) && array_key_exists($child->nodeName, $children)) {
                if (!is_array($children[$child->nodeName]) || !array_key_exists(0, $children[$child->nodeName])) {
                    $children[$child->nodeName] = array($children[$child->nodeName]);
                }
                
                $children[$child->nodeName][] = $childOutput;
            } else {
                $children[$child->nodeName] = $childOutput;
            }
        }
        
        $output['children'] = $children;
    }
    
    return $output;
}

$xml = '<root>
    <person name="John" age="30">
        <email>john@example.com</email>
        <phone>1234567890</phone>
    </person>
    <person name="Jane" age="25">
        <email>jane@example.com</email>
        <phone>9876543210</phone>
    </person>
</root>';

$dom = new DOMDocument();
$dom->loadXML($xml);

$result = convertDOMtoArr($dom->documentElement);

print_r($result);

Array
(
    [person] => Array
        (
            [0] => Array
                (
                    [attributes] => Array
                        (
                            [name] => John
                            [age] => 30
                        )
    
                    [children] => Array
                        (
                            [email] => john@example.com
                            [phone] => 1234567890
                        )
    
                )
    
            [1] => Array
                (
                    [attributes] => Array
                        (
                            [name] => Jane
                            [age] => 25
                        )
    
                    [children] => Array
                        (
                            [email] => jane@example.com
                            [phone] => 9876543210
                        )
    
                )
    
        )
    
)