我有一些来自avendor的非标准XML，带有重复元素。
SimpleXML和DOM都在合并我的XML标签。我怎么能阻止这个？
有没有办法让它们在没有它们合并的情况下进入数组？
<quiz>
<settings>
<user name="joe" email="blah@blah.com" />
</settings>
<questions>
<multiplechoice id="1">
<directions>What is 1+1?</directions>
<answer correct="true" selected="false">2</answer>
<answer correct="false" selected="false">4</answer>
<answer correct="false" selected="true">1</answer>
<answer correct="false" selected="false">0</answer>
</multiplechoice>
<truefalse id="2">
<directions>0 > 1?</directions>
<answer correct="true" selected="false">True</answer>
<answer correct="false" selected="true">False</answer>
</truefalse>
<multiplechoice id="3">
<directions>What is 2+1?</directions>
<answer correct="true" selected="false">3</answer>
<answer correct="false" selected="false">4</answer>
<answer correct="false" selected="true">1</answer>
<answer correct="false" selected="false">0</answer>
</multiplechoice>
</questions>
</quiz>
$xml = new SimpleXMLElement($xmldata);
无论我如何尝试，SimpleXML都会将<multiplechoice>元素合并为一个array()，如下所示：
[questions] => Array
(
[multiplechoice] => Array
(
[0] => Array
(
[@attributes] => Array
(
[id] => 1}
)
[directions] => What is 1+1?
[answers] => Array
(
[answer] => Array
(
[0] => 2
[1] => 4
[2] => 1
[3] => 0
)
)
)
[1] => Array
(
[@attributes] => Array
(
[id] => 3
)
[directions] => What is 2+1?
[answers] => Array
(
[answer] => Array
(
[0] => 3
[1] => 4
[2] => 1
[3] => 0
)
)
)
)
[truefalse] => Array
(
[0] => Array
(
[@attributes] => Array
(
[id] => 2}
)
[directions] => 0 > 1?
[answers] => Array
(
[answer] => Array
(
[0] => True
[1] => False
)
)
)
)
)
<multiplechoice>元素应该按照初始顺序分开：
[questions] => Array
(
[multiplechoice] => Array
(
[0] => Array
(
[@attributes] => Array
(
[id] => 1}
)
[directions] => What is 1+1?
[answers] => Array
(
[answer] => Array
(
[0] => 2
[1] => 4
[2] => 1
[3] => 0
)
)
)
)
[truefalse] => Array
(
[0] => Array
(
[@attributes] => Array
(
[id] => 2}
)
[directions] => 0 > 1?
[answers] => Array
(
[answer] => Array
(
[0] => True
[1] => False
)
)
)
)
[multiplechoice] => Array
(
[0] => Array
(
[@attributes] => Array
(
[id] => 3
)
[directions] => What is 2+1?
[answers] => Array
(
[answer] => Array
(
[0] => 3
[1] => 4
[2] => 1
[3] => 0
)
)
)
)
)
答案 0 :(得分：1)
我不知道你使用DOM做了什么，但它在这里保持开箱即用的顺序：
$dom = new DOMDocument();
$dom->loadXML($xml);
$questions = $dom->getElementsByTagName('questions')->item(0);
if($questions instanceof DOMElement){
foreach($questions->childNodes as $child){
if($child instanceof DOMElement){
var_dump($child->tagName, simplexml_import_dom($child));
}
}
}
完美的顺序：
string(14) "multiplechoice"
class SimpleXMLElement#4 (3) {
public $@attributes =>
array(1) {
'id' =>
string(1) "1"
}
public $directions =>
string(12) "What is 1+1?"
public $answer =>
array(4) {
[0] =>
string(1) "2"
[1] =>
string(1) "4"
[2] =>
string(1) "1"
[3] =>
string(1) "0"
}
}
string(9) "truefalse"
class SimpleXMLElement#4 (3) {
public $@attributes =>
array(1) {
'id' =>
string(1) "2"
}
public $directions =>
string(6) "0 > 1?"
public $answer =>
array(2) {
[0] =>
string(4) "True"
[1] =>
string(5) "False"
}
}
string(14) "multiplechoice"
class SimpleXMLElement#4 (3) {
public $@attributes =>
array(1) {
'id' =>
string(1) "3"
}
public $directions =>
string(12) "What is 2+1?"
public $answer =>
array(4) {
[0] =>
string(1) "3"
[1] =>
string(1) "4"
[2] =>
string(1) "1"
[3] =>
string(1) "0"
}
答案 1 :(得分：0)
与其他人一样。我自己已经概述过，不可能按照你在问题中要求的方式将树结构放入数组中。
XML是一种树结构，具有相同名称的多个元素可以存在于同一级别上。数组无法实现的东西。
所以最好保持 SimpleXMLElement 不变。对数据进行操作比处理数组要舒服得多。
然而据说，仍然可以使用类似于你要求的数据创建一个阵列，但它需要对其中的结构进行特殊处理。没有通用的方法来处理它。
例如：所有来自问题的子元素，然后用他们的名字键入：
$result = $xml->xpath('//questions/*');
foreach ($result as &$rebuild) {
$rebuild = [$rebuild->getName() => $rebuild];
}
unset($rebuild);
$result = ['questions' => $result];
$array = json_decode(json_encode($result), true);
然后生成的数组采用这种格式，我觉得处理起来不太实用：
Array
(
[questions] => Array
(
[0] => Array
(
[multiplechoice] => Array
(
[@attributes] => Array
(
[id] => 1
)
[directions] => What is 1+1?
[answer] => Array
(
[0] => 2
[1] => 4
[2] => 1
[3] => 0
)
)
)
[1] => Array
(
[truefalse] => Array
(
[@attributes] => Array
(
[id] => 2
)
[directions] => 0 > 1?
[answer] => Array
(
[0] => True
[1] => False
)
)
)
[2] => Array
(
[multiplechoice] => Array
(
[@attributes] => Array
(
[id] => 3
)
[directions] => What is 2+1?
[answer] => Array
(
[0] => 3
[1] => 4
[2] => 1
[3] => 0
)
)
)
)
)