多维PHP数组怎么转换成xml格式的数据

多维PHP数组如何转换成xml格式的数据？
PHP数组是这样的：

array(4) 

{ 

	["auth"]=> array(3) 

	{

		["user"]=> string(8) "customer" 

		["password"]=> string(8) "password" 

		["context"]=> string(1) "4" 

	} 

	["owner"]=> array(2) 

	{ 

		["user"]=> string(9) "customer2" 

		["context"]=> string(1) "4" 

	} 

	["language"]=> string(2) "en" 

	["task"]=> array(1) 

	{ 

		["code"]=> string(4) "0130" 

	} 

}

转换成xml格式后的数据格式是这样的：

	

		customer

		password

		4

	

	

		customer2

		4

	

	en

	

		0130

	

php数组 xml

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------解决方案--------------------

 $ar=array

( 

	"auth"=> array 

	(

		"user"=>  "customer" ,

		"password"=>  "password" ,

		"context"=>  "4" 

	) ,

	"owner"=> array 

	( 

		"user"=>  "customer2" ,

		"context"=>  "4" 

	) ,

	"language"=>  "en" ,

	"task"=> array

	( 

		"code"=>  "0130" 

	) 

);





$doc = new DOMDocument('1.0','UTF-8');

// we want a nice output

$doc->formatOutput = true;



$root = $doc->createElement('request');

$root = $doc->appendChild($root);



 foreach($ar as $title=>$title_v){

   $title = $doc->createElement($title);

   $title = $root->appendChild($title); 

    if(is_array($title_v)){

       foreach($title_v as $k=>$v){

	       $k = $doc->createElement($k);

           $k = $title->appendChild($k);

		   $text = $doc->createTextNode($v);

           $text = $k->appendChild($text);

	   } 

   }else{

       $text = $doc->createTextNode($title_v);

       $text = $title->appendChild($text);

   }

}



echo $doc->saveXML();

------解决方案--------------------

$ar = array( 

	"auth" => array( 

		"user" => "customer",

		"password" => "password",

		"context" => "4",

	),

	"owner" => array( 

		"user" => "customer2",

		"context" => "4",

	),

	"language" => "en",

	"task" => array( 

		"code" => "0130",

	), 

);

$xml = simplexml_load_string('');

create($ar, $xml);

echo $xml->saveXML();



function create($ar, $xml) {

	foreach($ar as $k=>$v) {

		if(is_array($v)) {

			$x = $xml->addChild($k);

			create($v, $x);

		}else $xml->addChild($k, $v);

	}

}

 



	

		customer 

		password 

		4 

	

	

		customer2 

		4 

	

	en 

	

		0130