你可以使用胡子模板引擎，并制作一个模板，如:

{{#RECEIVER}}
<RECEIVER>
    <COMPANY>{{{COMPANY}}}</COMPANY>
    <CONTACT>{{{CONTACT}}}</CONTACT>
    <ADDRESS>{{{ADDRESS}}}</ADDRESS>
    <ZIP>{{ZIP}}</ZIP>
    <CITY>{{{CITY}}}</CITY>
</RECEIVER>
{{/RECEIVER}}
{{#DOC}}
<DOC>
    <TEXT>{{{TEXT}}}</TEXT>
    <NUMBER>{{{NUMBER}}}</NUMBER>
</DOC>
{{/DOC}}

在PHP中这样使用它:

require_once( __DIR__ .'/../controls/Mustache/Autoloader.php' );
Mustache_Autoloader::register();
$oMustache = new Mustache_Engine();
$sTemplate = implode( '', file( __DIR__ ."/xml.tpl" ));
$return = $oMustache->render($sTemplate, $res);
echo($return);

基于这里的所有其他内容，通过前缀@处理数值索引+属性，并可以将xml注入到现有节点:

Code

function simple_xmlify($arr, SimpleXMLElement $root = null, $el = 'x') {
    // based on, among others http://stackoverflow.com/a/1397164/1037948

    if(!isset($root) || null == $root) $root = new SimpleXMLElement('<' . $el . '/>');

    if(is_array($arr)) {
        foreach($arr as $k => $v) {
            // special: attributes
            if(is_string($k) && $k[0] == '@') $root->addAttribute(substr($k, 1),$v);
            // normal: append
            else simple_xmlify($v, $root->addChild(
                    // fix 'invalid xml name' by prefixing numeric keys
                    is_numeric($k) ? 'n' . $k : $k)
                );
        }
    } else {
        $root[0] = $arr;
    }

    return $root;
}//--   fn  simple_xmlify

使用

// lazy declaration via "queryparam"
$args = 'hello=4&var[]=first&var[]=second&foo=1234&var[5]=fifth&var[sub][]=sub1&var[sub][]=sub2&var[sub][]=sub3&var[@name]=the-name&var[@attr2]=something-else&var[sub][@x]=4.356&var[sub][@y]=-9.2252';
$q = array();
parse_str($val, $q);

$xml = simple_xmlify($q); // dump $xml, or...
$result = get_formatted_xml($xml); // see below

结果

<?xml version="1.0"?>
<x>
  <hello>4</hello>
  <var name="the-name" attr2="something-else">
    <n0>first</n0>
    <n1>second</n1>
    <n5>fifth</n5>
    <sub x="4.356" y="-9.2252">
      <n0>sub1</n0>
      <n1>sub2</n1>
      <n2>sub3</n2>
    </sub>
  </var>
  <foo>1234</foo>
</x>

好处:格式化XML

function get_formatted_xml(SimpleXMLElement $xml, $domver = null, $preserveWhitespace = true, $formatOutput = true) {
    // http://stackoverflow.com/questions/1191167/format-output-of-simplexml-asxml

    // create new wrapper, so we can get formatting options
    $dom = new DOMDocument($domver);
    $dom->preserveWhiteSpace = $preserveWhitespace;
    $dom->formatOutput = $formatOutput;
    // now import the xml (converted to dom format)
    /*
    $ix = dom_import_simplexml($xml);
    $ix = $dom->importNode($ix, true);
    $dom->appendChild($ix);
    */
    $dom->loadXML($xml->asXML());

    // print
    return $dom->saveXML();
}//--   fn  get_formatted_xml

这里提供的答案仅将数组转换为带节点的XML，不能设置属性。我已经编写了一个php函数，允许您将数组转换为php，并为xml中的特定节点设置属性。这里的缺点是您必须以很少约定的特定方式构造数组(仅当您想使用属性时)

下面的示例也允许您用XML设置属性。

来源可以在这里找到: https://github.com/digitickets/lalit/blob/master/src/Array2XML.php

<?php    
$books = array(
    '@attributes' => array(
        'type' => 'fiction'
    ),
    'book' => array(
        array(
            '@attributes' => array(
                'author' => 'George Orwell'
            ),
            'title' => '1984'
        ),
        array(
            '@attributes' => array(
                'author' => 'Isaac Asimov'
            ),
            'title' => 'Foundation',
            'price' => '$15.61'
        ),
        array(
            '@attributes' => array(
                'author' => 'Robert A Heinlein'
            ),
            'title' => 'Stranger in a Strange Land',
            'price' => array(
                '@attributes' => array(
                    'discount' => '10%'
                ),
                '@value' => '$18.00'
            )
        )
    )
);
/* creates 
<books type="fiction">
  <book author="George Orwell">
    <title>1984</title>
  </book>
  <book author="Isaac Asimov">
    <title>Foundation</title>
    <price>$15.61</price>
  </book>
  <book author="Robert A Heinlein">
    <title>Stranger in a Strange Land</title>
    <price discount="10%">$18.00</price>
  </book>
</books>
*/
?>

我的答案，拼凑别人的答案。这应该可以纠正无法补偿数字键的错误:

function array_to_xml($array, $root, $element) {
    $xml = new SimpleXMLElement("<{$root}/>");
    foreach ($array as $value) {
        $elem = $xml->addChild($element);
        xml_recurse_child($elem, $value);
    }
    return $xml;
}

function xml_recurse_child(&$node, $child) {
    foreach ($child as $key=>$value) {
        if(is_array($value)) {
            foreach ($value as $k => $v) {
                if(is_numeric($k)){
                    xml_recurse_child($node, array($key => $v));
                }
                else {
                    $subnode = $node->addChild($key);
                    xml_recurse_child($subnode, $value);
                }
            }
        }
        else {
            $node->addChild($key, $value);
        }
    }   
}

array_to_xml()函数假定数组首先由数字键组成。如果数组有一个初始元素，则可以从array_to_xml()函数中删除foreach()和$elem语句，只传递$xml。

下面讨论名称空间。在本例中，构造包装器以包含名称空间定义，并将其传递给函数。使用冒号来标识命名空间。

测试数组

$inarray = [];
$inarray['p:apple'] = "red";
$inarray['p:pear'] = "green";
$inarray['p:peach'] = "orange";
$inarray['p1:grocers'] = ['p1:local' => "cheap", 'p1:imported' => "expensive"];


$xml = new SimpleXMLElement( '<p:wrapper xmlns:p="http://namespace.org/api" xmlns:p1="http://namespace.org/api2 /> ');

array_to_xml($xml,$inarray); 




function array_to_xml(SimpleXMLElement $object, array $data)
{   
    $nslist = $object->getDocNamespaces();

    foreach ($data as $key => $value)
    {   
        $nspace = null;
        $keyparts = explode(":",$key,2);
        if ( count($keyparts)==2) 
            $nspace = $nslist[$keyparts[0]];

        if (is_array($value))
        {   
            $key = is_numeric($key) ? "item$key" : $key;
            $new_object = $object->addChild($key,null,$nspace);
            array_to_xml($new_object, $value);
        }   
        else
        {   
            $key = is_numeric($key) ? "item$key" : $key;
            $object->addChild($key, $value,$nspace);
        }   
    }   
}   

来自PHP 5.4

function array2xml($data, $root = null){
    $xml = new SimpleXMLElement($root ? '<' . $root . '/>' : '<root/>');
    array_walk_recursive($data, function($value, $key)use($xml){
        $xml->addChild($key, $value);
    });
    return $xml->asXML();
}