php实现将数组转换为XML的方法

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<?php

class A2Xml {

private $version = '1.0';

private $encoding = 'UTF-8';

private $root = 'root';

private $xml = null;

function __construct() {

$this->xml = new XmlWriter();

}

function toXml($data, $eIsArray=FALSE) {

if(!$eIsArray) {

$this->xml->openMemory();

$this->xml->startDocument($this->version, $this->encoding);

$this->xml->startElement($this->root);

}

foreach($data as $key => $value){

if(is_array($value)){

$this->xml->startElement($key);

$this->toXml($value, TRUE);

$this->xml->endElement();

continue;

}

$this->xml->writeElement($key, $value);

}

if(!$eIsArray) {

$this->xml->endElement();

return $this->xml->outputMemory(true);

}

}

}

$res = array(

'hello' => '11212',

'world' => '232323',

'array' => array(

'test' => 'test',

'b' => array('c'=>'c', 'd'=>'d')

),

'a' => 'haha'

);

$xml = new A2Xml();

echo $xml->toXml($res);