如何将给定的PHP对象序列化为XML？我在查看simple_xml，我已经使用它将XML解析为对象，但是我不清楚如何实现相反的过程。
12个回答
54
我同意使用 PEAR 的 XML_Serializer，但如果你想要一个支持嵌套属性的对象/数组的简单工具，你可以使用这个。
class XMLSerializer {
// functions adopted from http://www.sean-barton.co.uk/2009/03/turning-an-array-or-object-into-xml-using-php/
public static function generateValidXmlFromObj(stdClass $obj, $node_block='nodes', $node_name='node') {
$arr = get_object_vars($obj);
return self::generateValidXmlFromArray($arr, $node_block, $node_name);
}
public static function generateValidXmlFromArray($array, $node_block='nodes', $node_name='node') {
$xml = '<?xml version="1.0" encoding="UTF-8" ?>';
$xml .= '<' . $node_block . '>';
$xml .= self::generateXmlFromArray($array, $node_name);
$xml .= '</' . $node_block . '>';
return $xml;
}
private static function generateXmlFromArray($array, $node_name) {
$xml = '';
if (is_array($array) || is_object($array)) {
foreach ($array as $key=>$value) {
if (is_numeric($key)) {
$key = $node_name;
}
$xml .= '<' . $key . '>' . self::generateXmlFromArray($value, $node_name) . '</' . $key . '>';
}
} else {
$xml = htmlspecialchars($array, ENT_QUOTES);
}
return $xml;
}
}
- philfreo
5
39
看看PEAR的XML_Serializer 软件包。我用它效果还不错。你可以将数组、对象等放入其中，它会把它们转换成XML格式。它还有很多选项，比如选择根节点的名称等。
应该能解决问题。
- arin
2
3我今天想在PHP 5.3.13上使用这个程序包（在此回答4年后），但是XML_Serializer和它的依赖项出现了“Strict Standards”错误。您知道其他替代方案吗？ - djule5
4警告，这个库有非常糟糕的依赖关系！ - clankill3r
10
虽然不完全回答了原问题，但我解决这个问题的方法是将我的对象声明为：
$root = '<?xml version="1.0" encoding="UTF-8"?><Activities/>';
$object = new simpleXMLElement($root);
相对于：
$object = new stdClass;
在我开始添加任何值之前！
- significance
1
当您完成后，只需调用
asXML()函数以获取生成的XML，或者对于内部xml，请使用children()->asXml()。太棒了！ - yoel halb7
使用dom函数来完成:
http://www.php.net/manual/zh/function.dom-import-simplexml.php
导入SimpleXML对象，然后保存。上面的链接包含一个示例。 :)
简而言之：
简而言之：
<?php
$array = array('hello' => 'world', 'good' => 'morning');
$xml = simplexml_load_string("<?xml version='1.0' encoding='utf-8'?><foo />");
foreach ($array as $k=>$v) {
$xml->addChild($k, $v);
}
?>
- Till
5
1我认为这并没有回答问题，我很确定他想做的是将array("foo" => "bar")转换成"<xml><foo>bar</foo></xml>"（不完全一样，但你明白我的意思）。 - davr
你可以填充一个simplexml对象吗？ - Till
但他并没有询问如何将simplexml对象转换为XML，而是想要普通的XML对象。除非我误解了，否则我没有看到一种简单的方法可以将任意PHP数据结构（对象、数组、字符串等）转换为simplexml对象（从而转换为XML字符串）。 - davr
仍然没有回答问题。您正在提供一个数组，而不是一个对象。即使您首先使用了
get_object_vars，它也无法递归地工作。 - philfreo仅进行一级转换 - vladkras
3
请看我的版本
class XMLSerializer {
/**
*
* The most advanced method of serialization.
*
* @param mixed $obj => can be an objectm, an array or string. may contain unlimited number of subobjects and subarrays
* @param string $wrapper => main wrapper for the xml
* @param array (key=>value) $replacements => an array with variable and object name replacements
* @param boolean $add_header => whether to add header to the xml string
* @param array (key=>value) $header_params => array with additional xml tag params
* @param string $node_name => tag name in case of numeric array key
*/
public static function generateValidXmlFromMixiedObj($obj, $wrapper = null, $replacements=array(), $add_header = true, $header_params=array(), $node_name = 'node')
{
$xml = '';
if($add_header)
$xml .= self::generateHeader($header_params);
if($wrapper!=null) $xml .= '<' . $wrapper . '>';
if(is_object($obj))
{
$node_block = strtolower(get_class($obj));
if(isset($replacements[$node_block])) $node_block = $replacements[$node_block];
$xml .= '<' . $node_block . '>';
$vars = get_object_vars($obj);
if(!empty($vars))
{
foreach($vars as $var_id => $var)
{
if(isset($replacements[$var_id])) $var_id = $replacements[$var_id];
$xml .= '<' . $var_id . '>';
$xml .= self::generateValidXmlFromMixiedObj($var, null, $replacements, false, null, $node_name);
$xml .= '</' . $var_id . '>';
}
}
$xml .= '</' . $node_block . '>';
}
else if(is_array($obj))
{
foreach($obj as $var_id => $var)
{
if(!is_object($var))
{
if (is_numeric($var_id))
$var_id = $node_name;
if(isset($replacements[$var_id])) $var_id = $replacements[$var_id];
$xml .= '<' . $var_id . '>';
}
$xml .= self::generateValidXmlFromMixiedObj($var, null, $replacements, false, null, $node_name);
if(!is_object($var))
$xml .= '</' . $var_id . '>';
}
}
else
{
$xml .= htmlspecialchars($obj, ENT_QUOTES);
}
if($wrapper!=null) $xml .= '</' . $wrapper . '>';
return $xml;
}
/**
*
* xml header generator
* @param array $params
*/
public static function generateHeader($params = array())
{
$basic_params = array('version' => '1.0', 'encoding' => 'UTF-8');
if(!empty($params))
$basic_params = array_merge($basic_params,$params);
$header = '<?xml';
foreach($basic_params as $k=>$v)
{
$header .= ' '.$k.'='.$v;
}
$header .= ' ?>';
return $header;
}
}
- Bulki S Maslom
4
1你能将这与之前提供的选项进行比较和对比吗？ - trex005
非常好的解决方案！！！它可以很好地处理深度对象和数组。谢谢。 - Silvio Delgado
不错的解决方案。小备注…… 在定义了多层命名空间的类的情况下，您可能会陷入麻烦。在使用带重音的“属性/值”时，您也可能会遇到麻烦。 - user2816761
当值被转换为标签名称时，如果这些值包含无效字符，则也必须考虑到它们。 - user2816761
2
- user22960
1
1
这是我的代码，用于将PHP对象序列化为Microsoft .NET XmlSerializer.Deserialize“可理解”的XML。
class XMLSerializer {
/**
* Get object class name without namespace
* @param object $object Object to get class name from
* @return string Class name without namespace
*/
private static function GetClassNameWithoutNamespace($object) {
$class_name = get_class($object);
return end(explode('\\', $class_name));
}
/**
* Converts object to XML compatible with .NET XmlSerializer.Deserialize
* @param type $object Object to serialize
* @param type $root_node Root node name (if null, objects class name is used)
* @return string XML string
*/
public static function Serialize($object, $root_node = null) {
$xml = '<?xml version="1.0" encoding="UTF-8" ?>';
if (!$root_node) {
$root_node = self::GetClassNameWithoutNamespace($object);
}
$xml .= '<' . $root_node . ' xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">';
$xml .= self::SerializeNode($object);
$xml .= '</' . $root_node . '>';
return $xml;
}
/**
* Create XML node from object property
* @param mixed $node Object property
* @param string $parent_node_name Parent node name
* @param bool $is_array_item Is this node an item of an array?
* @return string XML node as string
* @throws Exception
*/
private static function SerializeNode($node, $parent_node_name = false, $is_array_item = false) {
$xml = '';
if (is_object($node)) {
$vars = get_object_vars($node);
} else if (is_array($node)) {
$vars = $node;
} else {
throw new Exception('Coś poszło nie tak');
}
foreach ($vars as $k => $v) {
if (is_object($v)) {
$node_name = ($parent_node_name ? $parent_node_name : self::GetClassNameWithoutNamespace($v));
if (!$is_array_item) {
$node_name = $k;
}
$xml .= '<' . $node_name . '>';
$xml .= self::SerializeNode($v);
$xml .= '</' . $node_name . '>';
} else if (is_array($v)) {
$xml .= '<' . $k . '>';
if (count($v) > 0) {
if (is_object(reset($v))) {
$xml .= self::SerializeNode($v, self::GetClassNameWithoutNamespace(reset($v)), true);
} else {
$xml .= self::SerializeNode($v, gettype(reset($v)), true);
}
} else {
$xml .= self::SerializeNode($v, false, true);
}
$xml .= '</' . $k . '>';
} else {
$node_name = ($parent_node_name ? $parent_node_name : $k);
if ($v === null) {
continue;
} else {
$xml .= '<' . $node_name . '>';
if (is_bool($v)) {
$xml .= $v ? 'true' : 'false';
} else {
$xml .= htmlspecialchars($v, ENT_QUOTES);
}
$xml .= '</' . $node_name . '>';
}
}
}
return $xml;
}
}
例子：
class GetProductsCommandResult {
public $description;
public $Errors;
}
class Error {
public $id;
public $error;
}
$obj = new GetProductsCommandResult();
$obj->description = "Teścik";
$obj->Errors = array();
$obj->Errors[0] = new Error();
$obj->Errors[0]->id = 666;
$obj->Errors[0]->error = "Sth";
$obj->Errors[1] = new Error();
$obj->Errors[1]->id = 666;
$obj->Errors[1]->error = null;
$xml = XMLSerializer::Serialize($obj);
结果为：
<?xml version="1.0" encoding="UTF-8"?>
<GetProductsCommandResult xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<description>Teścik</description>
<Errors>
<Error>
<id>666</id>
<error>Sth</error>
</Error>
<Error>
<id>666</id>
</Error>
</Errors>
</GetProductsCommandResult>
- user3175253
0
使用递归方法，像这样：
private function ReadProperty($xmlElement, $object) {
foreach ($object as $key => $value) {
if ($value != null) {
if (is_object($value)) {
$element = $this->xml->createElement($key);
$this->ReadProperty($element, $value);
$xmlElement->AppendChild($element);
} elseif (is_array($value)) {
$this->ReadProperty($xmlElement, $value);
} else {
$this->AddAttribute($xmlElement, $key, $value);
}
}
}
}
这是完整的例子： http://www.tyrodeveloper.com/2018/09/convertir-clase-en-xml-con-php.html
- tyrodeveloper
1
0
我知道这是一个老问题，但最近我不得不生成复杂的XML结构。
我的方法包含高级面向对象编程原则。思路是序列化包含多个子节点和子子节点的父对象。
节点从类名获取名称，但在创建用于序列化的对象时，可以使用第一个参数覆盖类名。
您可以创建：简单节点（没有子节点）、EntityList和ArrayList。EntityList是同一类对象的列表，而ArrayList可能有不同的对象。
每个对象都必须扩展抽象类SerializeXmlAbstract，以匹配类中第一个输入参数：Object2xml的方法serialize($object, $name = NULL, $prefix = FALSE)。
默认情况下，如果您不提供第二个参数，则根XML节点将具有给定对象的类名。第三个参数指示根节点名称是否具有前缀。前缀作为Export2xml类中的私有属性硬编码。
interface SerializeXml {
public function hasAttributes();
public function getAttributes();
public function setAttributes($attribs = array());
public function getNameOwerriden();
public function isNameOwerriden();
}
abstract class SerializeXmlAbstract implements SerializeXml {
protected $attributes;
protected $nameOwerriden;
function __construct($name = NULL) {
$this->nameOwerriden = $name;
}
public function getAttributes() {
return $this->attributes;
}
public function getNameOwerriden() {
return $this->nameOwerriden;
}
public function setAttributes($attribs = array()) {
$this->attributes = $attribs;
}
public function hasAttributes() {
return (is_array($this->attributes) && count($this->attributes) > 0) ? TRUE : FALSE;
}
public function isNameOwerriden() {
return $this->nameOwerriden != NULL ? TRUE : FALSE;
}
}
abstract class Entity_list extends SplObjectStorage {
protected $_listItemType;
public function __construct($type) {
$this->setListItemType($type);
}
private function setListItemType($param) {
$this->_listItemType = $param;
}
public function detach($object) {
if ($object instanceOf $this->_listItemType) {
parent::detach($object);
}
}
public function attach($object, $data = null) {
if ($object instanceOf $this->_listItemType) {
parent::attach($object, $data);
}
}
}
abstract class Array_list extends SerializeXmlAbstract {
protected $_listItemType;
protected $_items;
public function __construct() {
//$this->setListItemType($type);
$this->_items = new SplObjectStorage();
}
protected function setListItemType($param) {
$this->_listItemType = $param;
}
public function getArray() {
$return = array();
$this->_items->rewind();
while ($this->_items->valid()) {
$return[] = $this->_items->current();
$this->_items->next();
}
// print_r($return);
return $return;
}
public function detach($object) {
if ($object instanceOf $this->_listItemType) {
if (in_array($this->_items->contains($object))) {
$this->_items->detach($object);
}
}
}
public function attachItem($ob) {
$this->_items->attach($ob);
}
}
class Object2xml {
public $rootPrefix = "ernm";
private $addPrefix;
public $xml;
public function serialize($object, $name = NULL, $prefix = FALSE) {
if ($object instanceof SerializeXml) {
$this->xml = new DOMDocument('1.0', 'utf-8');
$this->xml->appendChild($this->object2xml($object, $name, TRUE));
$this->xml->formatOutput = true;
echo $this->xml->saveXML();
} else {
die("Not implement SerializeXml interface");
}
}
protected function object2xml(SerializeXmlAbstract $object, $nodeName = NULL, $prefix = null) {
$single = property_exists(get_class($object), "value");
$nName = $nodeName != NULL ? $nodeName : get_class($object);
if ($prefix) {
$nName = $this->rootPrefix . ":" . $nName;
}
if ($single) {
$ref = $this->xml->createElement($nName);
} elseif (is_object($object)) {
if ($object->isNameOwerriden()) {
$nodeName = $object->getNameOwerriden();
}
$ref = $this->xml->createElement($nName);
if ($object->hasAttributes()) {
foreach ($object->getAttributes() as $key => $value) {
$ref->setAttribute($key, $value);
}
}
foreach (get_object_vars($object) as $n => $prop) {
switch (gettype($prop)) {
case "object":
if ($prop instanceof SplObjectStorage) {
$ref->appendChild($this->handleList($n, $prop));
} elseif ($prop instanceof Array_list) {
$node = $this->object2xml($prop);
foreach ($object->ResourceGroup->getArray() as $key => $value) {
$node->appendChild($this->object2xml($value));
}
$ref->appendChild($node);
} else {
$ref->appendChild($this->object2xml($prop));
}
break;
default :
if ($prop != null) {
$ref->appendChild($this->xml->createElement($n, $prop));
}
break;
}
}
} elseif (is_array($object)) {
foreach ($object as $value) {
$ref->appendChild($this->object2xml($value));
}
}
return $ref;
}
private function handleList($name, SplObjectStorage $param, $nodeName = NULL) {
$lst = $this->xml->createElement($nodeName == NULL ? $name : $nodeName);
$param->rewind();
while ($param->valid()) {
if ($param->current() != null) {
$lst->appendChild($this->object2xml($param->current()));
}
$param->next();
}
return $lst;
}
}
这是你需要的代码，可以从对象中获取有效的xml。下一个示例将生成此xml：
<InsertMessage priority="high">
<NodeSimpleValue firstAttrib="first" secondAttrib="second">simple value</NodeSimpleValue>
<Arrarita>
<Title>PHP OOP is great</Title>
<SequenceNumber>1</SequenceNumber>
<Child>
<FirstChild>Jimmy</FirstChild>
</Child>
<Child2>
<FirstChild>bird</FirstChild>
</Child2>
</Arrarita>
<ThirdChild>
<NodeWithChilds>
<FirstChild>John</FirstChild>
<ThirdChild>James</ThirdChild>
</NodeWithChilds>
<NodeWithChilds>
<FirstChild>DomDocument</FirstChild>
<SecondChild>SplObjectStorage</SecondChild>
</NodeWithChilds>
</ThirdChild>
</InsertMessage>
这个 XML 需要的类：
class NodeWithArrayList extends Array_list {
public $Title;
public $SequenceNumber;
public function __construct($name = NULL) {
echo $name;
parent::__construct($name);
}
}
class EntityListNode extends Entity_list {
public function __construct($name = NULL) {
parent::__construct($name);
}
}
class NodeWithChilds extends SerializeXmlAbstract {
public $FirstChild;
public $SecondChild;
public $ThirdChild;
public function __construct($name = NULL) {
parent::__construct($name);
}
}
class NodeSimpleValue extends SerializeXmlAbstract {
protected $value;
public function getValue() {
return $this->value;
}
public function setValue($value) {
$this->value = $value;
}
public function __construct($name = NULL) {
parent::__construct($name);
}
}
最后，实例化对象的代码是：
$firstChild = new NodeSimpleValue("firstChild");
$firstChild->setValue( "simple value" );
$firstChild->setAttributes(array("firstAttrib" => "first", "secondAttrib" => "second"));
$secondChild = new NodeWithArrayList("Arrarita");
$secondChild->Title = "PHP OOP is great";
$secondChild->SequenceNumber = 1;
$firstListItem = new NodeWithChilds();
$firstListItem->FirstChild = "John";
$firstListItem->ThirdChild = "James";
$firstArrayItem = new NodeWithChilds("Child");
$firstArrayItem->FirstChild = "Jimmy";
$SecondArrayItem = new NodeWithChilds("Child2");
$SecondArrayItem->FirstChild = "bird";
$secondListItem = new NodeWithChilds();
$secondListItem->FirstChild = "DomDocument";
$secondListItem->SecondChild = "SplObjectStorage";
$secondChild->attachItem($firstArrayItem);
$secondChild->attachItem($SecondArrayItem);
$list = new EntityListNode("NodeWithChilds");
$list->attach($firstListItem);
$list->attach($secondListItem);
$message = New NodeWithChilds("InsertMessage");
$message->setAttributes(array("priority" => "high"));
$message->FirstChild = $firstChild;
$message->SecondChild = $secondChild;
$message->ThirdChild = $list;
$object2xml = new Object2xml();
$object2xml->serialize($message, "xml", TRUE);
希望能对某些人有所帮助。
祝好， Siniša
- Siniša Dragičević Martinčić
0
最近我创建了一个可以通过Git获取的类来解决这个问题：
https://github.com/zappz88/XMLSerializer
这里是类的结构，请记住您需要适当定义根以格式化正确的xml：
class XMLSerializer {
private $OpenTag = "<";
private $CloseTag = ">";
private $BackSlash = "/";
public $Root = "root";
public function __construct() {
}
private function Array_To_XML($array, $arrayElementName = "element_", $xmlString = "")
{
if($xmlString === "")
{
$xmlString = "{$this->OpenTag}{$this->Root}{$this->CloseTag}";
}
$startTag = "{$this->OpenTag}{$arrayElementName}{$this->CloseTag}";
$xmlString .= $startTag;
foreach($array as $key => $value){
if(gettype($value) === "string" || gettype($value) === "boolean" || gettype($value) === "integer" || gettype($value) === "double" || gettype($value) === "float")
{
$elementStartTag = "{$this->OpenTag}{$arrayElementName}_{$key}{$this->CloseTag}";
$elementEndTag = "{$this->OpenTag}{$this->BackSlash}{$arrayElementName}_{$key}{$this->CloseTag}";
$xmlString .= "{$elementStartTag}{$value}{$elementEndTag}";
continue;
}
else if(gettype($value) === "array")
{
$xmlString = $this->Array_To_XML($value, $arrayElementName, $xmlString);
continue;
}
else if(gettype($value) === "object")
{
$xmlString = $this->Object_To_XML($value, $xmlString);
continue;
}
else
{
continue;
}
}
$endTag = "{$this->OpenTag}{$this->BackSlash}{$arrayElementName}{$this->CloseTag}";
$xmlString .= $endTag;
return $xmlString;
}
private function Object_To_XML($objElement, $xmlString = "")
{
if($xmlString === "")
{
$xmlString = "{$this->OpenTag}{$this->Root}{$this->CloseTag}";
}
foreach($objElement as $key => $value){
if(gettype($value) !== "array" && gettype($value) !== "object")
{
$startTag = "{$this->OpenTag}{$key}{$this->CloseTag}";
$endTag = "{$this->OpenTag}{$this->BackSlash}{$key}{$this->CloseTag}";
$xmlString .= "{$startTag}{$value}{$endTag}";
continue;
}
else if(gettype($value) === "array")
{
$xmlString = $this->Array_To_XML($value, $key, $xmlString);
continue;
}
else if(gettype($value) === "object")
{
$xmlString = $this->Object_To_XML($value, $xmlString);
continue;
}
else
{
continue;
}
}
return $xmlString;
}
public function Serialize_Object($element, $xmlString = "")
{
$endTag = "{$this->OpenTag}{$this->BackSlash}{$this->Root}{$this->CloseTag}";
return "{$this->Object_To_XML($element, $xmlString)}{$endTag}";
}
public function Serialize_Array($element, $xmlString = "")
{
$endTag = "{$this->OpenTag}{$this->BackSlash}{$this->Root}{$this->CloseTag}";
return "{$this->Array_To_XML($element, $xmlString)}{$endTag}";
}
}
- user10555044
1
...而且这种格式可以被PHP的xmlsimpleloadobject函数识别和解析。 - user10555044
网页内容由stack overflow 提供, 点击上面的可以查看英文原文，
原文链接
原文链接
$xml_generater = new XMLSerializer; $std_class = json_decode(json_encode($object)); $xml = $xml_generater->generateValidXmlFromObj($std_class);- Goose