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
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 = $xml_data->asXML('/file/path/name.xml');
?>
本代码段中使用的SimpleXMLElement::asXML文档
我想要一个代码,将一个数组内的所有元素,并把它们作为属性,所有数组作为子元素。
对于像这样的东西
array (
'row1' => array ('head_element' =>array("prop1"=>"some value","prop2"=>array("empty"))),
"row2"=> array ("stack"=>"overflow","overflow"=>"overflow")
);
我会得到这样的结果
<?xml version="1.0" encoding="utf-8"?>
<someRoot>
<row1>
<head_element prop1="some value">
<prop2 0="empty"/>
</head_element>
</row1>
<row2 stack="overflow" overflow="stack"/>
</someRoot>
要实现这一点,代码如下,但要非常小心,它是递归的,实际上可能会导致stackoverflow:)
function addElements(&$xml,$array)
{
$params=array();
foreach($array as $k=>$v)
{
if(is_array($v))
addElements($xml->addChild($k), $v);
else $xml->addAttribute($k,$v);
}
}
function xml_encode($array)
{
if(!is_array($array))
trigger_error("Type missmatch xml_encode",E_USER_ERROR);
$xml=new SimpleXMLElement('<?xml version=\'1.0\' encoding=\'utf-8\'?><'.key($array).'/>');
addElements($xml,$array[key($array)]);
return $xml->asXML();
}
您可能希望添加数组长度检查,以便在数据部分中设置某些元素,而不是作为属性。
您可以使用我一直在研究的XMLParser。
$xml = XMLParser::encode(array(
'bla' => 'blub',
'foo' => 'bar',
'another_array' => array (
'stack' => 'overflow',
)
));
// @$xml instanceof SimpleXMLElement
echo $xml->asXML();
会导致:
<?xml version="1.0"?>
<root>
<bla>blub</bla>
<foo>bar</foo>
<another_array>
<stack>overflow</stack>
</another_array>
</root>
只是对上面的函数进行了编辑,当键是数字时,添加前缀“key_”
// initializing or creating array
$student_info = array(your array data);
// creating object of SimpleXMLElement
$xml_student_info = new SimpleXMLElement("<?xml version=\"1.0\"?><student_info></student_info>");
// function call to convert array to xml
array_to_xml($student,$xml_student_info);
//saving generated xml file
$xml_student_info->asXML('file path and name');
function array_to_xml($student_info, &$xml_student_info) {
foreach($student_info as $key => $value) {
if(is_array($value)) {
if(!is_numeric($key)){
$subnode = $xml_student_info->addChild("$key");
array_to_xml($value, $subnode);
}
else{
$subnode = $xml_student_info->addChild("key_$key");
array_to_xml($value, $subnode);
}
}
else {
if(!is_numeric($key)){
$xml_student_info->addChild("$key","$value");
}else{
$xml_student_info->addChild("key_$key","$value");
}
}
}
}
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');