php递归解析数组生成xml问题求帮助

$config = array(	'root' => array(		'childs' => array(			'body' => array(				'childs' => array(					'scroller' => array(						'childs' => array(							'header' => array(								'childs' => array(									'simpleHeader' => array(										'childs' => array(											'a' => array()										)									)								)							),							'items' => array(								'childs' => array(									'fuck' => array(										'childs' => array(											'b' => array()										)									)								)							)						)					)				)			)		)	));header("Content-type:text/xml;Charset=UTF-8");$xml = new XMLWriter();$xml->openUri('php://output');$xml->startDocument('1.0', 'UTF-8');$xml->setIndent(true);function writeXml($array){	global $xml;	foreach($array as $key => $value){		$xml->startElement($key);		if( isset($value['childs']) && is_array($value['childs']) && count($value['childs']) > 0 ){			writeXml($value['childs']);		}		$xml->endElement();	}	$xml->endDocument();	$xml->flush();}writeXml($config);

回复讨论(解决方案)

if 判断的逻辑问题，你再仔细看看
php SPL里面有递归器，写起来简单点

把
$xml->endDocument();
$xml->flush();
移出 writeXml 函数，最后执行

....writeXml($config);$xml->endDocument();$xml->flush();

把
$xml->endDocument();
$xml->flush();
移出 writeXml 函数，最后执行

....writeXml($config);$xml->endDocument();$xml->flush();

整体封装成函数

function writeXml($array, $xml=null){  if(! $xml) {    header("Content-type:text/xml;Charset=UTF-8");    $xml = new XMLWriter();    $xml->openUri('php://output');    $xml->startDocument('1.0', 'UTF-8');    $xml->setIndent(true);    writeXml($array, $xml);    $xml->endDocument();    $xml->flush();  }else {    foreach($array as $key => $value){        $xml->startElement($key);        if( isset($value['childs']) && is_array($value['childs']) && count($value['childs']) > 0 ){            writeXml($value['childs'], $xml);        }        $xml->endElement();    }  }}