我喜欢这个问题，一些答案对我很有帮助，但我需要将xml转换为一个支配数组，所以我将发布我的解决方案，也许以后有人需要它:

<?php
$xml = json_decode(json_encode((array)simplexml_load_string($xml)),1);
$finalItem = getChild($xml);
var_dump($finalItem);

function getChild($xml, $finalItem = []){
    foreach($xml as $key=>$value){
        if(!is_array($value)){
            $finalItem[$key] = $value;
        }else{
            $finalItem = getChild($value, $finalItem);
        }
    }
    return $finalItem;
}
?>  

两行代码(https://www.php.net/manual/en/book.simplexml.php#113485)

$xml = new SimpleXMLElement("<your><xml><string>ok</string></xml></your>");
$array = (array)$xml;

参见https://github.com/gaarf/XML-string-to-PHP-array/blob/master/xmlstr_to_array.php

<?php
/**
  * convert xml string to php array - useful to get a serializable value
  *
  * @param string $xmlstr
  * @return array
  *
  * @author Adrien aka Gaarf & contributors
  * @see http://gaarf.info/2009/08/13/xml-string-to-php-array/
*/
function xmlstr_to_array($xmlstr) {
  $doc = new DOMDocument();
  $doc->loadXML($xmlstr);
  $root = $doc->documentElement;
  $output = domnode_to_array($root);
  $output['@root'] = $root->tagName;
  return $output;
}
function domnode_to_array($node) {
  $output = array();
  switch ($node->nodeType) {
    case XML_CDATA_SECTION_NODE:
    case XML_TEXT_NODE:
      $output = trim($node->textContent);
    break;
    case XML_ELEMENT_NODE:
      for ($i=0, $m=$node->childNodes->length; $i<$m; $i++) {
        $child = $node->childNodes->item($i);
        $v = domnode_to_array($child);
        if(isset($child->tagName)) {
          $t = $child->tagName;
          if(!isset($output[$t])) {
            $output[$t] = array();
          }
          $output[$t][] = $v;
        }
        elseif($v || $v === '0') {
          $output = (string) $v;
        }
      }
      if($node->attributes->length && !is_array($output)) { //Has attributes but isn't an array
        $output = array('@content'=>$output); //Change output into an array.
      }
      if(is_array($output)) {
        if($node->attributes->length) {
          $a = array();
          foreach($node->attributes as $attrName => $attrNode) {
            $a[$attrName] = (string) $attrNode->value;
          }
          $output['@attributes'] = $a;
        }
        foreach ($output as $t => $v) {
          if(is_array($v) && count($v)==1 && $t!='@attributes') {
            $output[$t] = $v[0];
          }
        }
      }
    break;
  }
  return $output;
}

另一个选择是SimpleXML扩展(我相信它是大多数php安装的标配)。

http://php.net/manual/en/book.simplexml.php

在您的示例中，语法看起来像这样

$xml = new SimpleXMLElement($xmlString);
echo $xml->bbb->cccc->dddd['Id'];
echo $xml->bbb->cccc->eeee['name'];
// or...........
foreach ($xml->bbb->cccc as $element) {
  foreach($element as $key => $val) {
   echo "{$key}: {$val}";
  }
}

奇怪的是没有人提到xml_parse_into_struct:

$simple = "<para><note>simple note</note></para>";
$p = xml_parser_create();
xml_parse_into_struct($p, $simple, $vals, $index);
xml_parser_free($p);
echo "Index array\n";
print_r($index);
echo "\nVals array\n";
print_r($vals);

当遇到只有文本节点的子元素时，在接受的答案拖放属性中使用的方法。例如:

$xml = '<container><element attribute="123">abcd</element></container>';
print_r(json_decode(json_encode(simplexml_load_string($xml, "SimpleXMLElement", LIBXML_NOCDATA)),1));

Array
(
    [element] => abcd
)

我的解决方案(我希望我能在这里给予赞扬，因为我确信这是从某些东西改编而来的):

function XMLtoArray($xml) {
    $previous_value = libxml_use_internal_errors(true);
    $dom = new DOMDocument('1.0', 'UTF-8');
    $dom->preserveWhiteSpace = false; 
    $dom->loadXml($xml);
    libxml_use_internal_errors($previous_value);
    if (libxml_get_errors()) {
        return [];
    }
    return DOMtoArray($dom);
}

function DOMtoArray($root) {
    $result = array();

    if ($root->hasAttributes()) {
        $attrs = $root->attributes;
        foreach ($attrs as $attr) {
            $result['@attributes'][$attr->name] = $attr->value;
        }
    }

    if ($root->hasChildNodes()) {
        $children = $root->childNodes;
        if ($children->length == 1) {
            $child = $children->item(0);
            if (in_array($child->nodeType,[XML_TEXT_NODE,XML_CDATA_SECTION_NODE])) {
                $result['_value'] = $child->nodeValue;
                return count($result) == 1
                    ? $result['_value']
                    : $result;
            }

        }
        $groups = array();
        foreach ($children as $child) {
            if (!isset($result[$child->nodeName])) {
                $result[$child->nodeName] = DOMtoArray($child);
            } else {
                if (!isset($groups[$child->nodeName])) {
                    $result[$child->nodeName] = array($result[$child->nodeName]);
                    $groups[$child->nodeName] = 1;
                }
                $result[$child->nodeName][] = DOMtoArray($child);
            }
        }
    }
    return $result;
}

$xml = '
    <aaaa Version="1.0">
       <bbb>
         <cccc>
           <dddd id="123" />
           <eeee name="john" age="24" />
           <ffff type="employee">Supervisor</ffff>
         </cccc>
       </bbb>
    </aaaa>
';
print_r(XMLtoArray($xml));

Array
(
    [aaaa] => Array
        (
            [@attributes] => Array
                (
                    [Version] => 1.0
                )

            [bbb] => Array
                (
                    [cccc] => Array
                        (
                            [dddd] => Array
                                (
                                    [@attributes] => Array
                                        (
                                            [id] => 123
                                        )

                                )

                            [eeee] => Array
                                (
                                    [@attributes] => Array
                                        (
                                            [name] => john
                                            [age] => 24
                                        )

                                )

                            [ffff] => Array
                                (
                                    [@attributes] => Array
                                        (
                                            [type] => employee
                                        )

                                    [_value] => Supervisor
                                )

                        )

                )

        )

)