如果你使用magento，你有这种类型的关联数组

$test_array = array (
    '0' => array (
            'category_id' => '582',
            'name' => 'Surat',
            'parent_id' => '565',
            'child_id' => '567',
            'active' => '1',
            'level' => '6',
            'position' => '17'
    ),

    '1' => array (
            'category_id' => '567', 
            'name' => 'test',
            'parent_id' => '0',
            'child_id' => '576',
            'active' => '0',
            'level' => '0',
            'position' => '18'
    ),
);

那么最好将关联数组转换为XML格式。在控制器文件中使用此代码。

$this->loadLayout(false);
//header ("content-type: text/xml");
$this->getResponse()->setHeader('Content-Type','text/xml');
$this->renderLayout();

$clArr2xml = new arr2xml($test_array, 'utf-8', 'listdata');
$output = $clArr2xml->get_xml();
print $output; 

class arr2xml
{
var $array = array();
var $xml = '';
var $root_name = '';
var $charset = '';

public function __construct($array, $charset = 'utf-8', $root_name = 'root')
{
    header ("content-type: text/xml");
    $this->array = $array;
    $this->root_name = $root_name;
    $this->charset = $charset;

    if (is_array($array) && count($array) > 0) {
        $this->struct_xml($array);

    } else {
        $this->xml .= "no data";
    }
}

public function struct_xml($array)
{
    foreach ($array as $k => $v) {
        if (is_array($v)) {
            $tag = ereg_replace('^[0-9]{1,}', 'item', $k); // replace numeric key in array to 'data'
            $this->xml .= "<$tag>";
            $this->struct_xml($v);
            $this->xml .= "</$tag>";
        } else {
            $tag = ereg_replace('^[0-9]{1,}', 'item', $k); // replace numeric key in array to 'data'
            $this->xml .= "<$tag><![CDATA[$v]]></$tag>";
        }
    }
}

public function get_xml()
{

    $header = "<?xml version=\"1.0\" encoding=\"" . $this->charset . "\"?><" . $this->root_name . ">";
    $footer = "</" . $this->root_name . ">";

    return $header . $this->xml . $footer;
}
}

我希望这对大家都有帮助。

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");
               }
          }
     }
}

下面讨论名称空间。在本例中，构造包装器以包含名称空间定义，并将其传递给函数。使用冒号来标识命名空间。

测试数组

$inarray = [];
$inarray['p:apple'] = "red";
$inarray['p:pear'] = "green";
$inarray['p:peach'] = "orange";
$inarray['p1:grocers'] = ['p1:local' => "cheap", 'p1:imported' => "expensive"];


$xml = new SimpleXMLElement( '<p:wrapper xmlns:p="http://namespace.org/api" xmlns:p1="http://namespace.org/api2 /> ');

array_to_xml($xml,$inarray); 




function array_to_xml(SimpleXMLElement $object, array $data)
{   
    $nslist = $object->getDocNamespaces();

    foreach ($data as $key => $value)
    {   
        $nspace = null;
        $keyparts = explode(":",$key,2);
        if ( count($keyparts)==2) 
            $nspace = $nslist[$keyparts[0]];

        if (is_array($value))
        {   
            $key = is_numeric($key) ? "item$key" : $key;
            $new_object = $object->addChild($key,null,$nspace);
            array_to_xml($new_object, $value);
        }   
        else
        {   
            $key = is_numeric($key) ? "item$key" : $key;
            $object->addChild($key, $value,$nspace);
        }   
    }   
}   

function toXML($data, $obj = false, $dom) {
    $is_first_level = false;
    if($obj === false) {
        $dom = new DomDocument('1.0');
        $obj = $dom;
        $is_first_level = true;
    }

    if(is_array($data)) {
        foreach($data as $key => $item) {
            $this->toXML($item, $obj->appendChild($dom->createElement($key)), $dom);
        }
    }else {
        $obj->appendChild($dom->createTextNode($data));
    }

    if($is_first_level) {
        $obj->formatOutput = true;
        return $obj->saveXML();
    }
    return $obj;
}

我发现这个解与原来的问题相似

<?php

$test_array = array (
  'bla' => 'blub',
  'foo' => 'bar',
  'another_array' => array (
    'stack' => 'overflow',
  ),
);

class NoSimpleXMLElement extends SimpleXMLElement {
 public function addChild($name,$value) {
  parent::addChild($value,$name);
 }
}
$xml = new NoSimpleXMLElement('<root/>');
array_walk_recursive($test_array, array ($xml, 'addChild'));
print $xml->asXML();

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;)