如何将数组转换为PHP中的SimpleXML对象?
当前回答
您可以直接在代码中使用以下函数,
function artoxml($arr, $i=1,$flag=false){
$sp = "";
for($j=0;$j<=$i;$j++){
$sp.=" ";
}
foreach($arr as $key=>$val){
echo "$sp<".$key.">";
if($i==1) echo "\n";
if(is_array($val)){
if(!$flag){echo"\n";}
artoxml($val,$i+5);
echo "$sp</".$key.">\n";
}else{
echo "$val"."</".$key.">\n";
}
}
}
调用第一个参数作为数组的函数,第二个参数必须为1,这将增加完美缩进,第三个参数必须为真。
例如,如果要转换的数组变量是$array1,那么, 调用时,调用函数应该封装在<pre>标记中。
Artoxml($array 1,1,true);
请在执行文件后查看页面源代码,因为<和>符号将不会显示在html页面中。
其他回答
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%">$18.00</price>
</book>
</books>
*/
?>
function toXML($data, $obj = false, $dom) {
$is_first_level = false;
if($obj === false) {
$dom = new DomDocument('1.0');
$obj = $dom;
$is_first_level = true;
}
if(is_array($data)) {
foreach($data as $key => $item) {
$this->toXML($item, $obj->appendChild($dom->createElement($key)), $dom);
}
}else {
$obj->appendChild($dom->createTextNode($data));
}
if($is_first_level) {
$obj->formatOutput = true;
return $obj->saveXML();
}
return $obj;
}
整个XML结构定义在$data数组中:
function array2Xml($data, $xml = null)
{
if (is_null($xml)) {
$xml = simplexml_load_string('<' . key($data) . '/>');
$data = current($data);
$return = true;
}
if (is_array($data)) {
foreach ($data as $name => $value) {
array2Xml($value, is_numeric($name) ? $xml : $xml->addChild($name));
}
} else {
$xml->{0} = $data;
}
if (!empty($return)) {
return $xml->asXML();
}
}
我的答案,拼凑别人的答案。这应该可以纠正无法补偿数字键的错误:
function array_to_xml($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。