如何将数组转换为PHP中的SimpleXML对象?
当前回答
以上答案大部分是正确的。然而，我想出了这个答案，它解决了array_walk_recursive的兼容性问题，也解决了数值键的问题。它也通过了我做的所有测试:
function arrayToXML(Array $array, SimpleXMLElement &$xml) {
foreach($array as $key => $value) {
// None array
if (!is_array($value)) {
(is_numeric($key)) ? $xml->addChild("item$key", $value) : $xml->addChild($key, $value);
continue;
}
// Array
$xmlChild = (is_numeric($key)) ? $xml->addChild("item$key") : $xml->addChild($key);
arrayToXML($value, $xmlChild);
}
}
我还为此添加了一个测试类，你可能会发现有用:
class ArrayToXmlTest extends PHPUnit_Framework_TestCase {
public function setUp(){ }
public function tearDown(){ }
public function testFuncExists() {
$this->assertTrue(function_exists('arrayToXML'));
}
public function testFuncReturnsXml() {
$array = array(
'name' => 'ardi',
'last_name' => 'eshghi',
'age' => 31,
'tel' => '0785323435'
);
$xmlEl = new SimpleXMLElement('<root/>');
arrayToXml($array, $xmlEl);
$this->assertTrue($xmlEl instanceOf SimpleXMLElement);
}
public function testAssocArrayToXml() {
$array = array(
'name' => 'ardi',
'last_name' => 'eshghi',
'age' => 31,
'tel' => '0785323435'
);
$expectedXmlEl = new SimpleXMLElement('<root/>');
$expectedXmlEl->addChild('name', $array['name']);
$expectedXmlEl->addChild('last_name', $array['last_name']);
$expectedXmlEl->addChild('age', $array['age']);
$expectedXmlEl->addChild('tel', $array['tel']);
$actualXmlEl = new SimpleXMLElement('<root/>');
arrayToXml($array, $actualXmlEl);
$this->assertEquals($expectedXmlEl->asXML(), $actualXmlEl->asXML());
}
public function testNoneAssocArrayToXml() {
$array = array(
'ardi',
'eshghi',
31,
'0785323435'
);
// Expected xml value
$expectedXmlEl = new SimpleXMLElement('<root/>');
foreach($array as $key => $value)
$expectedXmlEl->addChild("item$key", $value);
// What the function produces
$actualXmlEl = new SimpleXMLElement('<root/>');
arrayToXml($array, $actualXmlEl);
$this->assertEquals($expectedXmlEl->asXML(), $actualXmlEl->asXML());
}
public function testNestedMixArrayToXml() {
$testArray = array(
"goal",
"nice",
"funny" => array(
'name' => 'ardi',
'tel' =>'07415517499',
"vary",
"fields" => array(
'small',
'email' => 'ardi.eshghi@gmail.com'
),
'good old days'
),
"notes" => "come on lads lets enjoy this",
"cast" => array(
'Tom Cruise',
'Thomas Muller' => array('age' => 24)
)
);
// Expected xml value
$expectedXmlEl = new SimpleXMLElement('<root/>');
$expectedXmlEl->addChild('item0', $testArray[0]);
$expectedXmlEl->addChild('item1', $testArray[1]);
$childEl = $expectedXmlEl->addChild('funny');
$childEl->addChild("name", $testArray['funny']['name']);
$childEl->addChild("tel", $testArray['funny']['tel']);
$childEl->addChild("item0", "vary");
$childChildEl = $childEl->addChild("fields");
$childChildEl->addChild('item0', 'small');
$childChildEl->addChild('email', $testArray['funny']['fields']['email']);
$childEl->addChild("item1", 'good old days');
$expectedXmlEl->addChild('notes', $testArray['notes']);
$childEl2 = $expectedXmlEl->addChild('cast');
$childEl2->addChild('item0', 'Tom Cruise');
$childChildEl2 = $childEl2->addChild('Thomas Muller');
$childChildEl2->addChild('age', $testArray['cast']['Thomas Muller']['age']);
// What the function produces
$actualXmlEl = new SimpleXMLElement('<root/>');
arrayToXml($testArray, $actualXmlEl);
$this->assertEquals($expectedXmlEl->asXML(), $actualXmlEl->asXML());
}
}
其他回答
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);
}
}
?>
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);
如果冗长的xml不成问题，可以使用xmlrpc_encode从数组创建xml。 www.php.net/xmlrpc_encode
注意，如果使用关联键和/或数字键，创建的XML会有所不同
<?php
// /params/param/value/struct/member
// there is a tag "member" for each element
// "member" contains a tag "name". its value is the associative key
$xml1 = xmlrpc_encode(array('a'=>'b','c'=>'d'));
$simplexml1 = simplexml_load_string($xml1);
print_r($xml1);
print_r($simplexml1);
// /params/param/value/array/data
// there is a tag "data" for each element
// "data" doesn't contain the tag "name"
$xml2 = xmlrpc_encode(array('a','b'));
$simplexml2 = simplexml_load_string($xml2);
print_r($xml2);
print_r($simplexml2);
?>
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
