php 如何将数组转换为 SimpleXML
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How to convert array to SimpleXML
提问by Hanmant
How can I convert an array to a SimpleXML object in PHP?
如何在 PHP 中将数组转换为 SimpleXML 对象？
采纳答案by ax.
a short one:
一个简短的：
<?php
$test_array = array (
'bla' => 'blub',
'foo' => 'bar',
'another_array' => array (
'stack' => 'overflow',
),
);
$xml = new SimpleXMLElement('<root/>');
array_walk_recursive($test_array, array ($xml, 'addChild'));
print $xml->asXML();
results in
结果是
<?xml version="1.0"?>
<root>
<blub>bla</blub>
<bar>foo</bar>
<overflow>stack</overflow>
</root>
keys and values are swapped - you could fix that with array_flip()before the array_walk. array_walk_recursiverequires PHP 5. you could use array_walkinstead, but you won't get 'stack' => 'overflow'in the xml then.
键和值被交换 - 您可以array_flip()在 array_walk 之前修复它。array_walk_recursive需要 PHP 5。你可以array_walk改用，但你不会进入'stack' => 'overflow'xml。
回答by Hanmant
Here is php 5.2 code which will convert array of any depth to xml document:
这是 php 5.2 代码，它将任何深度的数组转换为 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
)
)
)
)
generated XML would be as:
生成的 XML 将如下所示：
<?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 snippet
PHP 代码段
<?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');
?>
Documentation on SimpleXMLElement::asXMLused in this snippet
回答by Lalit
The answers provided here only convert array to XML with nodes, you are not able to set attributes. I have written a php function that allows you to convert an array to php and also set attributes for particular nodes in the xml. The downside here is you have to construct an array in a particular way with few conventions (only if you want to use attributes)
此处提供的答案仅将数组转换为带有节点的 XML，您无法设置属性。我编写了一个 php 函数，它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的约定以特定方式构造数组（仅当您想使用属性时）
The following example will allow you to set attributes in XML too.
以下示例也将允许您在 XML 中设置属性。
The source can be found here: https://github.com/digitickets/lalit/blob/master/src/Array2XML.php
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' => '.61'
),
array(
'@attributes' => array(
'author' => 'Robert A Heinlein'
),
'title' => 'Stranger in a Strange Land',
'price' => array(
'@attributes' => array(
'discount' => '10%'
),
'@value' => '.00'
)
)
)
);
/* creates
<books type="fiction">
<book author="George Orwell">
<title>1984</title>
</book>
<book author="Isaac Asimov">
<title>Foundation</title>
<price>.61</price>
</book>
<book author="Robert A Heinlein">
<title>Stranger in a Strange Land</title>
<price discount="10%">.00</price>
</book>
</books>
*/
?>
回答by Francis Lewis
I found all of the answers to use too much code. Here is an easy way to do it:
我找到了使用过多代码的所有答案。这是一个简单的方法：
function to_xml(SimpleXMLElement $object, array $data)
{
foreach ($data as $key => $value) {
if (is_array($value)) {
$new_object = $object->addChild($key);
to_xml($new_object, $value);
} else {
// if the key is an integer, it needs text with it to actually work.
if ($key == (int) $key) {
$key = "key_$key";
}
$object->addChild($key, $value);
}
}
}
Then it's a simple matter of sending the array into the function, which uses recursion, so it will handle a multi-dimensional array:
然后就是一个简单的将数组发送到函数中的事情，它使用递归，所以它会处理一个多维数组：
$xml = new SimpleXMLElement('<rootTag/>');
to_xml($xml, $my_array);
Now $xml contains a beautiful XML object based on your array exactly how you wrote it.
现在 $xml 包含一个漂亮的 XML 对象，它基于您的数组完全按照您编写它的方式。
print $xml->asXML();
回答by onokazu
<?php
function array_to_xml(array $arr, SimpleXMLElement $xml)
{
foreach ($arr as $k => $v) {
is_array($v)
? array_to_xml($v, $xml->addChild($k))
: $xml->addChild($k, $v);
}
return $xml;
}
$test_array = array (
'bla' => 'blub',
'foo' => 'bar',
'another_array' => array (
'stack' => 'overflow',
),
);
echo array_to_xml($test_array, new SimpleXMLElement('<root/>'))->asXML();
回答by user492589
From PHP 5.4
从 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();
}
回答by Syl
Another improvement:
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();
}
Usage:
用法：
$this->arrayToXML($array, new SimpleXMLElement('<root/>'), 'child_name_to_replace_numeric_integers');
回答by Frans van Asselt
Here is my entry, simple and clean..
这是我的条目，简单而干净..
function array2xml($array, $xml = false){
if($xml === false){
$xml = new SimpleXMLElement('<root/>');
}
foreach($array as $key => $value){
if(is_array($value)){
array2xml($value, $xml->addChild($key));
}else{
$xml->addChild($key, $value);
}
}
return $xml->asXML();
}
header('Content-type: text/xml');
print array2xml($array);
回答by CodePT
So anyway... I took onokazu's code (thanks!) and added the ability to have repeated tags in XML, it also supports attributes, hope someone finds it useful!
所以无论如何......我拿了小野的代码（谢谢！）并在XML中添加了重复标签的能力，它也支持属性，希望有人觉得它有用！
<?php
function array_to_xml(array $arr, SimpleXMLElement $xml) {
foreach ($arr as $k => $v) {
$attrArr = array();
$kArray = explode(' ',$k);
$tag = array_shift($kArray);
if (count($kArray) > 0) {
foreach($kArray as $attrValue) {
$attrArr[] = explode('=',$attrValue);
}
}
if (is_array($v)) {
if (is_numeric($k)) {
array_to_xml($v, $xml);
} else {
$child = $xml->addChild($tag);
if (isset($attrArr)) {
foreach($attrArr as $attrArrV) {
$child->addAttribute($attrArrV[0],$attrArrV[1]);
}
}
array_to_xml($v, $child);
}
} else {
$child = $xml->addChild($tag, $v);
if (isset($attrArr)) {
foreach($attrArr as $attrArrV) {
$child->addAttribute($attrArrV[0],$attrArrV[1]);
}
}
}
}
return $xml;
}
$test_array = array (
'bla' => 'blub',
'foo' => 'bar',
'another_array' => array (
array('stack' => 'overflow'),
array('stack' => 'overflow'),
array('stack' => 'overflow'),
),
'foo attribute1=value1 attribute2=value2' => 'bar',
);
$xml = array_to_xml($test_array, new SimpleXMLElement('<root/>'))->asXML();
echo "$xml\n";
$dom = new DOMDocument;
$dom->preserveWhiteSpace = FALSE;
$dom->loadXML($xml);
$dom->formatOutput = TRUE;
echo $dom->saveXml();
?>
回答by drzaus
Based on everything else here, handles numerical indices + attributes via prefixing with @, and could inject xml to existing nodes:
基于此处的其他所有内容，通过前缀处理数字索引 + 属性@，并可以将 xml 注入现有节点：
Code
代码
function simple_xmlify($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
Usage
用法
// 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
Result
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>
Bonus: Formatting XML
奖励：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
