<?php

/**
 * @note array to XML example 160607 by Eagle(老鷹)
 * @for IT Help q: http://ithelp.ithome.com.tw/questions/10183369
 * @Reference material
 * url: http://www.codexworld.com/convert-array-to-xml-in-php/
 **/

/**
 * view can show xml tag
 *  感謝費公指導
 */
header('Content-Type: text/xml');

/**
 * @get url:http://www.codexworld.com/convert-array-to-xml-in-php/
 * @param $array array
 * @param $xml new SimpleXMLElement
 */
function array_to_xml($array, &$xml)
{
    foreach ($array as $key => $value) {
        if (is_array($value)) {
            if (!is_numeric($key)) {
                $subnode = $xml->addChild("$key");
                array_to_xml($value, $subnode);
            } else {
                $subnode = $xml->addChild("item$key");
                array_to_xml($value, $subnode);
            }
        } else {
            $xml->addChild("$key", htmlspecialchars("$value"));
        }
    }
}

$data_array = [0 => ['name' => 'eagle', 'age' => 29]
    , 1 => ['name' => 'jack', 'age' => 60]];

$xml = new SimpleXMLElement("<?xml version=\"1.0\"?><user_info></user_info>");
array_to_xml($data_array, $xml);
print_r($xml->asXML());

result(修正)

<user_info>
					<item0>
								<name>eagle</name>
								<age>29</age>
								</item0>
          <item1>
								<name>jack</name>
								<age>60</age>
					</item1>
</user_info>

小弟拙作參考一些資料做出來,如有問題歡迎指導老鷹~~!