php 有没有办法在PHP中将json转换为xml？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/856833/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Is there any way to convert json to xml in PHP?
提问by
Is there any way to convert jsonto xmlin PHP? I know that xml to json is very much possible.
有什么办法可以转换json成xmlinPHP吗？我知道 xml 到 json 很有可能。
回答by Samir Talwar
If you're willing to use the XML Serializerfrom PEAR, you can convert the JSON to a PHP object and then the PHP object to XML in two easy steps:
如果您愿意使用PEAR的XML Serializer，您可以通过两个简单的步骤将 JSON 转换为 PHP 对象，然后将 PHP 对象转换为 XML：
include("XML/Serializer.php");
function json_to_xml($json) {
$serializer = new XML_Serializer();
$obj = json_decode($json);
if ($serializer->serialize($obj)) {
return $serializer->getSerializedData();
}
else {
return null;
}
}
回答by Tomalak
It depends on how exactly you want you XML to look like. I would try a combination of json_decode()and the PEAR::XML_Serializer(more info and examples on sitepoint.com).
这取决于您希望 XML 看起来像什么。我会尝试结合json_decode()和PEAR::XML_Serializer（更多信息和示例在 sitepoint.com 上）。
require_once 'XML/Serializer.php';
$data = json_decode($json, true)
// An array of serializer options
$serializer_options = array (
'addDecl' => TRUE,
'encoding' => 'ISO-8859-1',
'indent' => ' ',
'rootName' => 'json',
'mode' => 'simplexml'
);
$Serializer = &new XML_Serializer($serializer_options);
$status = $Serializer->serialize($data);
if (PEAR::isError($status)) die($status->getMessage());
echo '<pre>';
echo htmlspecialchars($Serializer->getSerializedData());
echo '</pre>';
(Untested code - but you get the idea)
（未经测试的代码 - 但你明白了）
回答by Marcelo Cantos
Crack open the JSON with json_decode, and traverse it to generate whatever XML you want.
用 破解打开 JSON json_decode，并遍历它以生成您想要的任何 XML。
In case you're wondering, there is no canonical mapping between JSON and XML, so you have to write the XML-generation code yourself, based on the needs of your application.
如果您想知道，JSON 和 XML 之间没有规范映射，因此您必须根据应用程序的需要自己编写 XML 生成代码。
回答by spiky
I combined the two earlier suggestions into:
我将之前的两个建议合并为：
/**
* Convert JSON to XML
* @param string - json
* @return string - XML
*/
function json_to_xml($json)
{
include_once("XML/Serializer.php");
$options = array (
'addDecl' => TRUE,
'encoding' => 'UTF-8',
'indent' => ' ',
'rootName' => 'json',
'mode' => 'simplexml'
);
$serializer = new XML_Serializer($options);
$obj = json_decode($json);
if ($serializer->serialize($obj)) {
return $serializer->getSerializedData();
} else {
return null;
}
}
回答by 131
A native approch might be
本机方法可能是
function json_to_xml($obj){
$str = "";
if(is_null($obj))
return "<null/>";
elseif(is_array($obj)) {
//a list is a hash with 'simple' incremental keys
$is_list = array_keys($obj) == array_keys(array_values($obj));
if(!$is_list) {
$str.= "<hash>";
foreach($obj as $k=>$v)
$str.="<item key=\"$k\">".json_to_xml($v)."</item>".CRLF;
$str .= "</hash>";
} else {
$str.= "<list>";
foreach($obj as $v)
$str.="<item>".json_to_xml($v)."</item>".CRLF;
$str .= "</list>";
}
return $str;
} elseif(is_string($obj)) {
return htmlspecialchars($obj) != $obj ? "<![CDATA[$obj]]>" : $obj;
} elseif(is_scalar($obj))
return $obj;
else
throw new Exception("Unsupported type $obj");
}
回答by Gordon
Another option would be to use a JSON streaming parser.
另一种选择是使用JSON 流解析器。
Using a streamer parser would come in handy if you want to bypass the intermediate object graph created by PHP when using json_decode. For instance, when you got a large JSON document and memory is an issue, you could output the XML with XMLWriterdirectly while reading the document with the streaming parser.
如果您想在使用json_decode. 例如，当您获得一个大型 JSON 文档并且内存有问题时，您可以XMLWriter在使用流式解析器读取文档时直接输出 XML 。
One example would be https://github.com/salsify/jsonstreamingparser
一个例子是https://github.com/salsify/jsonstreamingparser
$writer = new XMLWriter;
$xml->openURI('file.xml');
$listener = new JSON2XML($writer); // you need to write the JSON2XML listener
$stream = fopen('doc.json', 'r');
try {
$parser = new JsonStreamingParser_Parser($stream, $listener);
$parser->parse();
} catch (Exception $e) {
fclose($stream);
throw $e;
}
The JSON2XML Listener would need to implement the Listener interface:
JSON2XML Listener 需要实现Listener 接口：
interface JsonStreamingParser_Listener
{
public function start_document();
public function end_document();
public function start_object();
public function end_object();
public function start_array();
public function end_array();
public function key($key);
public function value($value);
}
At runtime, the listener will receive the various events from the parser, e.g. when the parser finds an object, it will send the data to the start_object()method. When it finds an array, it will trigger start_array()and so on. In those methods you'd then delegate the values to the appropriate methods in the XMLWriter, e.g. start_element()and so on.
在运行时，侦听器将接收来自解析器的各种事件，例如，当解析器找到一个对象时，它会将数据发送给start_object()方法。当它找到一个数组时，它会触发start_array()等等。在这些方法中，您可以将值委托给XMLWriter, eg 中的适当方法start_element()，依此类推。
Disclaimer:I am not affiliated with the author, nor have I used the tool before. I picked this library because the API looked sufficiently simple to illustrate how to use an event based JSON parser.
免责声明：我与作者无关，之前也没有使用过该工具。我选择这个库是因为 API 看起来足够简单，可以说明如何使用基于事件的 JSON 解析器。
