php 生成xml文件

<?php

class Xml
{
/*
*  $aData     要格式化的数组
*  $path      xml信息要写入的文件路径
*  $version   xml文件的版本信息
*  $encoding  xml文件信息的编码形式
*  返回 ： false  数组格式不正确
true   成功
*/
private $_strEcode;
public function array2XmlFile ( $aData , $path , $version='1.0' , $encoding = 'GBK')
{
$this->_strEcode = $encoding;
//判断数组格式是否正确
$bFlag = $this ->checkArray($aData);
if(!$bFlag)
{
return false;
}
$xmlDoc = @new DOMDocument( $version , $encoding );
$xmlDoc -> formatOutput=true;
foreach($aData as $kData => $vData)
{
//声明根节点 upload
$objRoot = $xmlDoc->createElement ($kData) ;
$objRoot = $xmlDoc->appendChild($objRoot);

//添加根节点属性 icp
if(is_array($vData))
{
$xmlDoc = $this-> formatXml($vData , $kData , $xmlDoc , $objRoot);
}
}
if($xmlDoc-> save($path))
{ //保存路径
return true;
}
else
{
return false ;
}

}

/*
*

*/
public function array2Xmlstring( $aData , $version='1.0' , $encoding = 'GBK')
{
$this->_strEcode = $encoding;
//判断数组格式是否正确
$bFlag = $this ->checkArray($aData);
if(!$bFlag)
{
return false;
}
$xmlDoc = @new DOMDocument( $version , $encoding );
$xmlDoc -> formatOutput=true;
foreach($aData as $kData => $vData)
{
//声明根节点 upload
$objRoot = $xmlDoc->createElement ($kData) ;
$objRoot = $xmlDoc->appendChild($objRoot);

//添加根节点属性 icp
if(is_array($vData))
{
$xmlDoc = $this-> formatXml($vData , $kData , $xmlDoc , $objRoot);
}
}

return $xmlDoc->saveXML();
}

private function checkArray($aData)
{
$bIntFlag = false ;
$bStrFlag = false ;
$bResult = true;
foreach($aData as $k => $v)
{
$strKType = gettype($k);
if(strcmp($strKType , 'integer') == 0)
{
$bIntFlag = true;
}
elseif(strcmp($k , "Attribute") != 0)
{
$bStrFlag = true;
}
}
if( $bIntFlag  and $bStrFlag)
{
return false;
}
else
{
foreach($aData as $kk => $vv)
{
if(is_array($vv))
{
$bResult = $this -> checkArray($vv);
if(!$bResult)
{
break;
}
}
}
return $bResult ;
}
}

private function formatXml($aData , $kFront , $objDoc , $objFrnDoc , $objStepDoc= null)
{
$nCount = 0;
foreach( $aData as $kData => $vData)
{
if(is_string($kData))
{
$kData = trim( $kData );
}
if(strcmp ( $kData , "Attribute") == 0)
{
foreach($vData as $kAttr => $vAttr)
{
$strAttr = $objDoc->createAttribute($kAttr);   //创建节点属性对象实体
$objAttr = $objFrnDoc->appendChild($strAttr);  //把属性添加到节点info中
$objAttr -> appendChild($objDoc->createTextNode($vAttr));
}
}
else
{
if(!is_int(($kData)))
{
$objCurrDoc = $objDoc -> createElement ($kData);
$objCurrDoc = $objFrnDoc->appendChild($objCurrDoc);
}
else
{
if($nCount == 0)
{
$objCurrDoc = $objFrnDoc;
$nCount ++ ;
}
else
{
$objCurrDoc = $objDoc -> createElement ($kFront);
$objCurrDoc = $objStepDoc->appendChild($objCurrDoc);
}
}

if(!is_array($vData) )
{
if(strcasecmp($this->_strEcode , 'utf-8') == 0)
{
$objCurrDoc->appendChild($objDoc->createTextNode($vData));
}
else
{
//$objCurrDoc->appendChild($objDoc->createTextNode(mb_convert_encoding ($vData ,"UTF-8", "GB2312")));
$objCurrDoc->appendChild($objDoc->createTextNode(mb_convert_encoding ($vData ,"UTF-8", "GBK")));
}
}
else
{
$objDoc = $this ->formatXml($vData , $kData , $objDoc  , $objCurrDoc , $objFrnDoc);
}
}
}
return $objDoc;
}

/*
* $objXml xml格式对象
* 返回 ： 对应格式数组
*/
public function XmlString2Arr($xml)
{
if(is_string($xml))
{
$xml = simplexml_load_string($xml);
}
$aXml = (array) $xml;
foreach($aXml as $k => $v)
{
if(is_object($v) || is_array($v))
{
$aXml[$k] = $this -> XmlString2Arr($v);
}
}
return $aXml;
}


}