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(), $actualXmlEl->asXML());
}
}
其他回答
我认为上面所有的解决方案都很好，但我看到目前为止，它并没有真正创建一个准确的格式良好的XML，因为数组键与$my_array[main_node][multiple_values][] = ARRAY ('id' => '1')然后转换为
<main_node>
<multiple_values>
<0>
<id>1 test</id>
</0>
</multiple_values>
<multiple_values>
<1>
<id>2 test</id>
</1>
</multiple_values>
</main_node>
这是XML解析器方面的一个问题……
I should be like this:
<main_node>
<multiple_values>
<id>1 test</id>
</multiple_values>
<multiple_values>
<id>2 test</id>
</multiple_values>
</main_node>
如果你用load_simple_xml来解析…你会得到完全相同的数组/对象结构。
我的函数还自动创建正确的根节点。
// Code to convert php array to xml document 20211112
function array2xml(array $data, $xml_class_obj = '', $group_by_parent_allowed = '', $options = array())
{
if(!$xml_class_obj) :
$is_root = 1;
$xml_class_obj = new XMLWriter();
$xml_class_obj->openMemory();
$xml_class_obj->setIndent(TRUE);
$xml_class_obj->setIndentString(' ');
if($options['encoding'] != '') $xml_class_obj->startDocument('1.0', $options['encoding']);
else $xml_class_obj->startDocument('1.0');
endif;
foreach ($data as $key => $value) {
if (is_array($value)) { // IS ARRAY
// check if allow below keys are int, if yes group them to same parent tree
$group_by_parent = $key;
foreach(array_keys($value) as $c_keys) :
if(!is_int($c_keys)) $group_by_parent = '';
endforeach;
if(empty($group_by_parent)) $xml_class_obj->startElement($key);
if($group_by_parent_allowed != '') $xml_class_obj->startElement($group_by_parent_allowed);
$this->array2xml($value, $xml_class_obj, $group_by_parent, $options);
if(empty($group_by_parent)) $xml_class_obj->endElement();
} else { // IS VALUE
if(is_string($value)) :
$xml_class_obj->startElement($key);
$xml_class_obj->writeCData($value);
$xml_class_obj->endElement();
else :
$xml_class_obj->writeElement($key, $value);
endif;
}
} // foreach
if($group_by_parent_allowed != '') $xml_class_obj->endElement();
if($is_root == 1) :
$xml_class_obj->endDocument();
return $xml_class_obj->outputMemory();
else :
return $xml_class_obj;
endif;
}
// usage
$ary_new_xml = array();
$ary_new_xml['order']['customer']['customerid'] = '123456';
$ary_new_xml['order']['customer']['customertype'] = 15;
$ary_new_xml['order']['orderprio'] = 2;
$ary_new_xml['order']['orderpos'][] = array('sku' => 9999910001111, 'quantity' => 3);
$ary_new_xml['order']['orderpos'][] = array('sku' => 9999910002222, 'quantity' => 1);
echo array2xml($ary_new_xml,'','',array('enconding' => 'UTF-8'));
结果:
<?xml version="1.0" encoding="UTF-8"?>
<order>
<customer>
<customerid>82936639</customerid>
<customertype>15</customertype>
</customer>
<orderprio>2</orderprio>
<orderpos>
<sku>9999910001111</sku>
<quantity>3</quantity>
</orderpos>
<orderpos>
<sku>9999910002222</sku>
<quantity>1</quantity>
</orderpos>
</order>
我希望这能帮助到一些人;)
使用FluidXML，您可以从一个PHP数组开始，生成一个用于SimpleXML的XML…只有两行代码。
$fluidxml = fluidxml($array);
$simplexml = simplexml_import_dom($fluidxml->dom());
一个示例数组可以是
$array = [ 'doc' => [
'fruit' => 'orange',
'cake' => [
'@id' => '123',
'@' => 'tiramisu' ],
[ 'pasta' => 'matriciana' ],
[ 'pasta' => 'boscaiola' ]
] ];
https://github.com/servo-php/fluidxml
function array2xml(array $data, SimpleXMLElement $object = null, $oldNodeName = 'item')
{
if (is_null($object)) $object = new SimpleXMLElement('<root/>');
$isNumbered = true;
$idx = 0;
foreach ($data as $key => $x)
if (is_string($key) || ($idx++ != $key + 0))
$isNumbered = false;
foreach ($data as $key => $value)
{
$attribute = preg_match('/^[0-9]/', $key . '') ? $key : null;
$key = (is_string($key) && !preg_match('/^[0-9]/', $key . '')) ? $key : preg_replace('/s$/', '', $oldNodeName);
if (is_array($value))
{
$new_object = $object->addChild($key);
if (!$isNumbered && !is_null($attribute)) $new_object->addAttribute('id', $attribute);
array2xml($value, $new_object, $key);
}
else
{
if (is_bool($value)) $value = $value ? 'true' : 'false';
$node = $object->addChild($key, htmlspecialchars($value));
if (!$isNumbered && !is_null($attribute) && !isset($node->attributes()->id))
$node->addAttribute('id', $attribute);
}
}
return $object;
}
例如，该函数返回一个<obj>…</obj><obj>…</obj>数值索引的XML标记。
输入:
array(
'people' => array(
'dog',
'cat',
'life' => array(
'gum',
'shoe',
),
'fish',
),
array('yeah'),
)
输出:
<root>
<people>
<people>dog</people>
<people>cat</people>
<life>
<life>gum</life>
<life>shoe</life>
</life>
<people>fish</people>
<people>
<people>yeah</people>
</people>
</people>
</root>
这应该能满足所有的共同需求。也许你可以把第三行改成:
$key = is_string($key) ? $key : $oldNodeName . '_' . $key;
或者如果你正在处理以s结尾的复数:
$key = is_string($key) ? $key : preg_replace('/s$/', '', $oldNodeName);
整个XML结构定义在$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 $xml->asXML();
}
}
我会评论投票次数第二多的答案，因为如果有数字索引的内部数组，它不会保留结构并生成糟糕的xml。
我基于它开发了自己的版本，因为我需要简单的json和xml之间的转换器，而不管数据的结构。我的版本保留了数字键信息和原始数组的结构。它为数值索引值创建元素，方法是将值包装为值命名的元素，其key-attribute包含数值key。
例如
阵列('测试' = >阵列(0 = >“值”,1 = > '其他'))
皈依
<test><value key="0">some value</value><value key="1">other</value></test>
我的版本的array_to_xml -function(希望它能帮助到某人:)
function array_to_xml($arr, &$xml) {
foreach($arr as $key => $value) {
if(is_array($value)) {
if(!is_numeric($key)){
$subnode = $xml->addChild("$key");
} else {
$subnode = $xml->addChild("value");
$subnode->addAttribute('key', $key);
}
array_to_xml($value, $subnode);
}
else {
if (is_numeric($key)) {
$xml->addChild("value", $value)->addAttribute('key', $key);
} else {
$xml->addChild("$key",$value);
}
}
}
}
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