PHP数组与XML之间的转换的例子

function arrayToXml($arr){
    $xml = "<root>";
    foreach ($arr as $key=>$val){
        if(is_array($val)){
            $xml.="<".$key.">".arrayToXml($val)."</".$key.">";
        }else{
            $xml.="<".$key.">".$val."</".$key.">";
        }
    }
    $xml.="</root>";
    return $xml;
}

function arrayToXml($arr,$dom=0,$item=0){
    if (!$dom){
        $dom = new DOMDocument("1.0");
    }
    if(!$item){
        $item = $dom->createElement("root"); 
        $dom->appendChild($item);
    }
    foreach ($arr as $key=>$val){
        $itemx = $dom->createElement(is_string($key)?$key:"item");
        $item->appendChild($itemx);
        if (!is_array($val)){
            $text = $dom->createTextNode($val);
            $itemx->appendChild($text);
            
        }else {
            arrayToXml($val,$dom,$itemx);
        }
    }
    return $dom->saveXML();
}

<root>
<user>月光光abcd</user>
<pvs>13002</pvs>
<ips>
<baidu_ip>1200</baidu_ip>
<google_ip>1829</google_ip>
</ips>
<date>2016-06-01</date>
</root>

class ArrayToXML
{
    /**
     * The main function for converting to an XML document.
     * Pass in a multi dimensional array and this recrusively loops through and builds up an XML document.
     *
     * @param array $data
     * @param string $rootNodeName - what you want the root node to be - defaultsto data.
     * @param SimpleXMLElement $xml - should only be used recursively
     * @return string XML
     */
    public static function toXml($data, $rootNodeName = 'data', $xml=null)
    {
        // turn off compatibility mode as simple xml throws a wobbly if you don't.
        if (ini_get('zend.ze1_compatibility_mode') == 1)
        {
            ini_set ('zend.ze1_compatibility_mode', 0);
        }
       
        if ($xml == null)
        {
            $xml = simplexml_load_string("<?xml version='1.0' encoding='utf-8'?><$rootNodeName />");
        }
       
        // loop through the data passed in.
        foreach($data as $key => $value)
        {
            // no numeric keys in our xml please!
            if (is_numeric($key))
            {
                // make string key...
                $key = "unknownNode_". (string) $key;
            }
           
            // replace anything not alpha numeric
            $key = preg_replace('/[^a-z]/i', '', $key);
           
            // if there is another array found recrusively call this function
            if (is_array($value))
            {
                $node = $xml->addChild($key);
                // recrusive call.
                ArrayToXML::toXml($value, $rootNodeName, $node);
            }
            else
            {
                // add single node.
                                $value = htmlentities($value);
                $xml->addChild($key,$value);
            }
           
        }
        // pass back as string. or simple xml object if you want!
        return $xml->asXML();
    }
}

function arrtoxml($arr,$dom=0,$item=0){
    if (!$dom){
        $dom = new DOMDocument("1.0");
    }
    if(!$item){
        $item = $dom->createElement("root");
        $dom->appendChild($item);
    }
    foreach ($arr as $key=>$val){
        $itemx = $dom->createElement(is_string($key)?$key:"item");
        $item->appendChild($itemx);
        if (!is_array($val)){
            $text = $dom->createTextNode($val);
            $itemx->appendChild($text);
           
        }else {
            arrtoxml($val,$dom,$itemx);
        }
    }
    return $dom->saveXML();
}

如果你使用 curl 获取的 xml data
$xml = simplexml_load_string($data);
$data['tk'] = json_decode(json_encode($xml),TRUE);
如果是直接获取 URL 数据的话
$xml = simplexml_load_file($data);
$data['tk'] = json_decode(json_encode($xml),TRUE);
先把 simplexml 对象转换成 json，再将 json 转换成数组。

<?php
$xmlfile = file_get_contents($path);
$ob= simplexml_load_string($xmlfile);
$json  = json_encode($ob);
$configData = json_decode($json, true);
?>

如果你使用 curl 获取的 xml data
$xml = simplexml_load_string($data);
$data['tk'] = json_decode(json_encode($xml),TRUE);
如果是直接获取 URL 数据的话
$xml = simplexml_load_file($data);
$data['tk'] = json_decode(json_encode($xml),TRUE);
先把 simplexml 对象转换成 json，再将 json 转换成数组。

// Xml 转 数组, 包括根键
function xml_to_array( $xml )
{
$reg = "/<(\w+)[^>]*>([\\x00-\\xFF]*)<\\/\\1>/";
if(preg_match_all($reg, $xml, $matches))
{
$count = count($matches[0]);
for($i = 0; $i < $count; $i++)
{
$subxml= $matches[2][$i];
$key = $matches[1][$i];
if(preg_match( $reg, $subxml ))
{
$arr[$key] = xml_to_array( $subxml );
}else{
$arr[$key] = $subxml;
}
}
}
return $arr;
}
// Xml 转 数组, 不包括根键
function xmltoarray( $xml )
{
$arr = xml_to_array($xml);
$key = array_keys($arr);
return $arr[$key[0]];
}

function simplexml_obj2array($obj){
      if ($obj instanceof SimpleXMLElement) {
       $obj = (array)$obj;
      }
    
      if (is_array($obj)) {
       $result = $keys = array();
       foreach( $obj as $key=>$value)
       {
        isset($keys[$key]) ? ($keys[$key] += 1) : ($keys[$key] = 1);
    
        if( $keys[$key] == 1 )
        {
         $result[$key] = simplexml_obj2array($value);
        }
        elseif( $keys[$key] == 2 )
        {
         $result[$key] = array($result[$key], simplexml_obj2array($value));
        }
        else if( $keys[$key] > 2 )
        {
         $result[$key][] = simplexml_obj2array($value);
        }
       }
       return $result;
      } else {
       return $obj;
      }
 }
$xml=simplexml_load_file("D:/ www.111cn.net /lib/books.xml");
 
$rss = simplexml_obj2array($xml);

<?php 
$reader = new XMLReader(); 
$reader->open('person.xml');                                                     //读取xml数据 
$i=1; 
while ($reader->read()) {                                                              //是否读取 
 if ($reader->nodeType == XMLReader::TEXT) {               //判断node类型 
  if($i%3){ 
   echo $reader->value;                                                                  //取得node的值 
  }else{ 
   echo $reader->value."<br>" ; 
  } 
  $i++; 
 } 
} 
?> 

// 创建一个 DOMDocument()

$_doc = new DOMDocument();

// 载入 xml

$_doc ->load( 'test.xml' );

// 取 version 标签

$_version = $_doc ->getElementsByTagName( 'version' );

echo $_version ->item( 2 )->nodeValue;

// 遍历 version 标签

foreach ( $_version as $v ) {

echo $v ->nodeValue;

}

2. DOMDocument 生成 XML

// 声明 xml

$_doc = new DOMDocument( '1.0' , 'utf-8' );

// 排版格式

$_doc ->formatOutput = true ;

// 创建一个主标签

$_root = $_doc ->createElement( 'root' );

// 创建一个一级标签 version

$_version = $_doc ->createElement( 'version' );

// 给 version 标签里赋值

$_versionTextNode = $_doc ->createTextNode( '1.0' );

// 将值放入 version 标签里

$_version ->appendChild( $_versionTextNode );

// 将一级标签 version 放入 root 里

$_root ->appendChild( $_version );

// 将主标签写入 xml

$_doc ->appendChild( $_root );

// 生成 xml

$_doc ->save( 'aaa.xml' );

require_once(‘xml.class.php’);

$xml = new xml(“exemple.xml”,”item”);

$newarray = array(

“title”=>”XML标题“,

“text”=>”PHP的XML类测试！“

);

$insert=$xml->xml_query(‘insert’,”,”,$newarray);//第二及第三个变量位置是条件，留空表示在最后插入

修改记录

require_once(‘xml.class.php’);

$xml = new xml(“exemple.xml”,”item”);

$array = array(

“title”=>”XML标题“,

“text”=>”PHP的XML类测试！“

);

require_once(‘xml.class.php’);

$xml = new xml(“exemple.xml”,”item”);

$array = array();

$insert=$xml->xml_query(‘update’,'title,=,20年后世界将会怎样？‘,’and’,$array);//数组留空