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>
*/
?>

另一个改进:

/**
* Converts an array to XML
*
* @param array $array
* @param SimpleXMLElement $xml
* @param string $child_name
*
* @return SimpleXMLElement $xml
*/
public function arrayToXML($array, SimpleXMLElement $xml, $child_name)
{
    foreach ($array as $k => $v) {
        if(is_array($v)) {
            (is_int($k)) ? $this->arrayToXML($v, $xml->addChild($child_name), $v) : $this->arrayToXML($v, $xml->addChild(strtolower($k)), $child_name);
        } else {
            (is_int($k)) ? $xml->addChild($child_name, $v) : $xml->addChild(strtolower($k), $v);
        }
    }

    return $xml->asXML();
}

用法:

$this->arrayToXML($array, new SimpleXMLElement('<root/>'), 'child_name_to_replace_numeric_integers');

您也可以通过DOM来实现这一点。请参阅下面的代码。

<?php

$el = array();
$command = array();

$dom = new DOMDocument('1.0', 'utf-8');
$dom->formatOutput = true;

$xml_array = [
    'root'=>[
    'Good guy' => [
        'name' => [
            '_cdata' => 'Luke Skywalker'
        ],
        'weapon' => 'Lightsaber'
    ],
    'Bad guy' => [
        'name' => 'Sauron',
        'weapon' => 'Evil Eye'
    ]
        ]
];

convert_xml($xml_array);

if(!empty($el))
{
    $dom->appendChild(end($el));
}

echo $dom->saveXML();

?>

<?php

 function convert_xml($Xml)
{
    global $el, $dom;

        foreach($Xml as $id=>$val)
        {
            if(is_numeric($id))
            {
                $id = "Item".($id);
            }

            $id = str_replace(' ', '-', strtolower($id));

            if(is_array($val))
            {
                $ele = $dom->createElement($id);
                array_push($el, $ele);
                convert_xml($val);
            }
            else
            {
                $ele = $dom->createElement($id, $val);

                if(!empty($el))
                {
                    $com = end($el)->appendChild($ele);
                }
                else
                {
                    $dom->appendChild($ele);
                }

            }
        }

        if(sizeof($el) > 1)
        {
            $child = end($el);
            $com = prev($el)->appendChild($child);
            array_pop($el);
        }
}

?>

下面是php 5.2代码，将数组的任何深度转换为xml文档:

Array
(
    ['total_stud']=> 500
    [0] => Array
        (
            [student] => Array
                (
                    [id] => 1
                    [name] => abc
                    [address] => Array
                        (
                            [city]=>Pune
                            [zip]=>411006
                        )                       
                )
        )
    [1] => Array
        (
            [student] => Array
                (
                    [id] => 2
                    [name] => xyz
                    [address] => Array
                        (
                            [city]=>Mumbai
                            [zip]=>400906
                        )   
                )

        )
)

生成的XML如下所示:

<?xml version="1.0"?>
<student_info>
    <total_stud>500</total_stud>
    <student>
        <id>1</id>
        <name>abc</name>
        <address>
            <city>Pune</city>
            <zip>411006</zip>
        </address>
    </student>
    <student>
        <id>1</id>
        <name>abc</name>
        <address>
            <city>Mumbai</city>
            <zip>400906</zip>
        </address>
    </student>
</student_info>

PHP代码片段

<?php
// function defination to convert array to xml
function array_to_xml( $data, &$xml_data ) {
    foreach( $data as $key => $value ) {
        if( is_array($value) ) {
            if( is_numeric($key) ){
                $key = 'item'.$key; //dealing with <0/>..<n/> issues
            }
            $subnode = $xml_data->addChild($key);
            array_to_xml($value, $subnode);
        } else {
            $xml_data->addChild("$key",htmlspecialchars("$value"));
        }
     }
}

// initializing or creating array
$data = array('total_stud' => 500);

// creating object of SimpleXMLElement
$xml_data = new SimpleXMLElement('<?xml version="1.0"?><data></data>');

// function call to convert array to xml
array_to_xml($data,$xml_data);

//saving generated xml file; 
$result = $xml_data->asXML('/file/path/name.xml');

?>

本代码段中使用的SimpleXMLElement::asXML文档

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>
*/
?>

这里有一个函数帮我解决了这个问题:

就像这样叫它

echo arrayToXml("response",$arrayIWantToConvert);
function arrayToXml($thisNodeName,$input){
        if(is_numeric($thisNodeName))
            throw new Exception("cannot parse into xml. remainder :".print_r($input,true));
        if(!(is_array($input) || is_object($input))){
            return "<$thisNodeName>$input</$thisNodeName>";
        }
        else{
            $newNode="<$thisNodeName>";
            foreach($input as $key=>$value){
                if(is_numeric($key))
                    $key=substr($thisNodeName,0,strlen($thisNodeName)-1);
                $newNode.=arrayToXml3($key,$value);
            }
            $newNode.="</$thisNodeName>";
            return $newNode;
        }
    }