php中的array2xml转换

function array2xml($array, $rootElement = '<root>', $xml = null) {
    if ($xml === null) {
        $xml = new SimpleXMLElement($rootElement);
    }

    foreach ($array as $key => $value) {
        if (is_array($value)) {
            array2xml($value, $key, $xml->addChild($key));
        } else {
            $xml->addChild($key, $value);
        }
    }

    return $xml->asXML();
}

// 示例数组
$data = array(
    'name' => 'John Doe',
    'age' => 30,
    'email' => 'johndoe@example.com',
    'address' => array(
        'street' => '123 Main St',
        'city' => 'New York',
        'country' => 'USA'
    )
);

// 调用array2xml函数进行转换
$xmlString = array2xml($data);

// 输出转换后的XML字符串
echo $xmlString;