浅谈如何利用PHP访问和操作DOM

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DOMÊ÷½Úµã×ñÑ­XMLÃüÃû¹æ·¶£¬È磺

1¡¢Document½Úµã -- ±íʾDOMDocument½Ó¿Ú

2¡¢Element½Úµã -- ±íʾDOMElement½Ó¿Ú

3¡¢Attribute½Úµã -- ±íʾDOMAttr½Ó¿Ú

4¡¢Comment½Úµã -- ±íʾDOMComment½Ó¿Ú

5¡¢Text½Úµã -- ±íʾDOMText½Ó¿Ú

ÌáÈ¡ÔªËØ

ÕâһС½Ú½éÉÜÈçºÎ´ÓDOMÊ÷ÖÐÌáÈ¡ÔªËغÍÖµ£¬±¾ÎÄʹÓÃBook.xml×÷ΪÀý×Ó½øÐÐ˵Ã÷£¬ÆäÄÚÈÝÈçÇåµ¥1Ëùʾ¡£

Çåµ¥1 Book.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?> 
<book> 
<!--XML Processing [part I] --> 
 <name>XML Processing I</name> 
  <author>John Smith Jr.</author> 
  <publisher>HisOwnTM</publisher> 
  <ISBN>111-222-333-4441</ISBN> 
  <contents> 
    <chapter_I> 
      <title>What is XML about ?</title> 
      <content>XML (Extensible Markup Language) is a ...</content> 
    </chapter_I> 
    <chapter_II> 
      <title>SAX</title> 
      <content>SAX is a simple API for ...</content> 
   </chapter_II> 
    <chapter_III> 
      <title>StAX</title> 
      <content>Much powerful and flexible, StAX, is very...</content> 
    </chapter_III> 
    <chapter_IV> 
      <title>DOM 
        <subtitle>DOM concept  
          <continut>Starting to use DOM...</continut> 
        </subtitle> 
        <subchapter_IV_I> 
         <title>First DOM application...</title> 
          <content>Here it is your first DOM application...</content> 
        </subchapter_IV_I>  
      </title>              
    </chapter_IV>           
    <end>The end...</end>           
  </contents> 
<!-- See you in XML Processing [part II] --> 
</book> 

ÏÈÏÂÔر¾ÎÄʹÓõÄPHP´úÂëѹËõ°ü£¬http://assets.devx.com/sourcecode/41975_oa_mainsource.zip£¬½«Book.xmlºÍѹ Ëõ°ü½âѹºó·ÅÔÚͬһ¸öĿ¼Ï¡£

µÚÒ»¸öʾÀýÓ¦ÓóÌÐòʹÓÃBook.xmlÎĵµ£¬ÌáÈ¡³ö¹ØÁªµÄÊ÷£¬È»ºóʹÓÃDOMElement½Ó¿ÚµÄgetElementsByTagName·½·¨ÏÔʾµÚÒ»¸ö×Ó½ÚµãʵÀý£º

DOMNodeList DOMElement::getElementsByTagName(string $name)£ºÕâ¸ö·½·¨·µ»ØËùÓÐ$name²ÎÊýÖ¸¶¨µÄ±êÇ©ÃûµÄ×ÓÔªËØ¡£ÏÂÃæµÄÀý×Ó²éÕÒ<book>¸ù½Úµã £¬È»ºó²éÕÒËüµÄ×Ó½Úµã <author>£¬<publisher>ºÍ <name>ÔªËØ£¬Ñ¡Ôñÿ¸ö×Ó½ÚµãµÄµÚÒ»¸ö£¬×îºó´òÓ¡ÕâЩ½ÚµãµÄÖµ£º

<?php 
 // ´´½¨Ò»¸öÎĵµÊµÀý  
  $doc = new DOMDocument();  
  //ÔØÈëBook.xmlÎļþ  
  $doc->load( 'Book.xml' );  
  //ʹÓÃbook±êÇ©ÃûËÑË÷ËùÓÐÔªËØ  
  $books = $doc->getElementsByTagName( "book" );  
  //ʹÓÃauthor±êÇ©ÃûËÑË÷ËùÓÐÔªËØ  
  $authors = $doc->getElementsByTagName( "author" );  
  //·µ»ØµÚÒ»¸ö±êÇ©ÃûΪauthorµÄÔªËØ  
  $author = $authors->item(0)->nodeValue;  
  //ÒÔpublisher±êÇ©ÃûËÑË÷ËùÓÐÔªËØ 
  $publishers = $doc->getElementsByTagName( "publisher" );  
  //·µ»ØµÚÒ»¸öÕÒµ½µÄ±êÇ©ÃûΪpublisherµÄÔªËØ  
   $publisher = $publishers->item(0)->nodeValue;  
  //ËÑË÷±êÇ©ÃûΪnameµÄËùÓÐÔªËØ 
  $titles = $doc->getElementsByTagName( "name" );  
  //·µ»Ø±êÇ©ÃûΪnameµÄµÚÒ»¸öÕÒµ½µÄÔªËØ  
  $title = $titles->item(0)->nodeValue;  
  //´òÓ¡ÕÒµ½µÄÖµ  
  echo "$title - $author - $publisher \n";  
 ?> 

×îºóÒ»ÐÐÊÇ´òÓ¡µÚÒ»¸ö±êÌ⣬µÚÒ»¸ö×÷Õߣ¬µÚÒ»¸ö³ö°æÉÌ£¬Ê¹ÓÃÁ¬×Ö·û·Ö¸ô£¬Êä³ö£º

XML Processing I - John Smith Jr. - HisOwnTM

µÝ¹éä¯ÀÀDOMÊ÷

ÒòΪXMLÎĵµ½á¹¹ÖÐÒ»¸ö±êÇ©¿ÉÒÔ°üÀ¨ÁíÒ»¸ö±êÇ©£¨·ÖÖ§Ê÷£©£¬Ê£Ï¾ÍÊÇÒ¶×ӽڵ㣬Òò´ËÄã¿ÉÒÔä¯ÀÀÍêÕûµÄÊ÷»ò´ÓÈκνڵ㿪ʼµÝ¹éä¯ÀÀ×ÓÊ÷ ¡£ÏÂÃæµÄÀý×ÓÊÇ´ÓÈκοªÊ¼½Úµã£¨$node£©ä¯ÀÀÏÂÃæµÄXML×ÓÊ÷£¬²¢Áгö½ÚµãµÄÃû×ÖºÍÖµ¡£

function getNodesInfo($node)  
{  
   if ($node->hasChildNodes())  
   {  
      $subNodes = $node->childNodes; 
      foreach ($subNodes as $subNode)  
      { 
         if (($subNode->nodeType != 3) ||   
            (($subNode->nodeType == 3) &&  
            (strlen(trim($subNode->wholeText))>=1)))     
         {  
            echo "Node name: ".$subNode->nodeName."\n";  
            echo "Node value: ".$subNode->nodeValue."\n";  
         }  
         getNodesInfo($subNode);           
      }  
   }
        
}    

ÉÏÃæµÄÀý×ÓʹÓÃÏÂÃæµÄÌõ¼þÈ¥³ýÁËËùÓпÕÎı¾½Úµã£¬ÈÃÊä³ö¿´ÆðÀ´¸ü¸É¾»£º

if (($subNode->nodeType != 3) ||   
   (($subNode->nodeType == 3) &&  
   (strlen(trim($subNode->wholeText))>=1)))    

Ç°ÃæµÄ´úÂë¼ì²é½ÚµãÊÇ·ñ±»´¦Àí£¬Í¬Ñù£¬Äã¿ÉÒÔÉèÖÃÔ¤¶¨ÒåµÄpreserveWhiteSpaceÊôÐÔ£¬ËüÒƳýÈßÓàµÄ¿Õ°×£¬Ä¬ÈÏÖµÊÇTRUE¡£

ΪÁ˲âÊÔÕâ¸ö¹¦ÄÜ£¬ÏÂÃæÕâ¸öÀý×Ó´«µÝBook.xmlÎĵµµÄ¸ù½Úµã¸øµÝ¹éº¯ÊýgetNodesInfo£¬È»ºó´òÓ¡³öÕû¸öDOMÊ÷µÄ±êÇ©ºÍÖµ£º

<?php 
//´´½¨Ò»¸öÎĵµÊµÀý   
$doc = new DOMDocument();  
//ÔØÈëBook.xmlÎļþ  
$doc->load( 'Book.xml' );   
//ÉèÖöÔÏóÊ÷¸ù   
$root = $dom->firstChild;  
// µÝ¹éº¯ÊýÁгö×ÓÊ÷µÄËùÓÐ½Úµã  
function getNodesInfo($node)  
{  
   if ($node->hasChildNodes())  
   {  
      $subNodes = $node->childNodes;  
     foreach ($subNodes as $subNode)  
      {  
         if (($subNode->nodeType != 3) ||   
            (($subNode->nodeType == 3)    
            &&(strlen(trim($subNode->wholeText))>=1)))     
         {  
         echo "Node name: ".$subNode->nodeName."\n";  
         echo "Node value: ".$subNode->nodeValue."\n";  
     }  
      getNodesInfo($subNode);           
      }  
   }        
}     
//µ÷ÓÃgetNodesInfoº¯Êý  
getNodesInfo($root);  
?> 

 Í¼1ÏÔʾÁËÊä³öµÄС²¿·ÖÄÚÈÝ

ͼ- 1ÎĵµÄÚÈÝ£ºÕâ¸öͼÏÔʾÁËͨ¹ýgetNodesInfoµÝ¹éº¯ÊýÔËÐÐBook.xmlµÄ²¿·ÖÊä³öÄÚÈÝ

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Ôö¼Óнڵã

DOMNode½Ó¿Ú°üÀ¨¶à¸ö´´½¨Ð½ڵãºÍÔÚDOMÊ÷ÖвåÈë½ÚµãµÄ·½·¨£¬Èç¹ûÒª´´½¨Ò»¸öнڵ㣬¿ÉÒÔʹÓÃcreateElement»òcreateTextNode·½·¨£¬È»ºó £¬ÎªÁËÔö¼ÓÒ»¸öнڵ㵽DOMÊ÷ÉÏ£¬¿ÉÒÔµ÷ÓÃappendChild»òinsertBefore·½·¨£¬appendChild·½·¨Ôö¼ÓÒ»¸öеÄ×ӽڵ㵽Ìض¨½ÚµãµÄ×Ó½ÚµãÁбíµÄºóÃ棬¶ø insertBefore·½·¨ÊÇÔÚÌض¨½ÚµãµÄÇ°Ãæ²åÈëÒ»¸ö½Úµã¡£

ÏÂÃæÊÇÕâЩ·½·¨µÄÔ­ÐÍ£º

1¡¢DOMElement createElement(string $name [, string $value ]) £ºÕâ¸ö·½·¨´´½¨ÁËÒ»¸öDOMElementÀàµÄʵÀý£¬$name²ÎÊý±íʾÐÂÔªËصıêÇ©Ãû£¬$value²ÎÊý ±íʾԪËصÄÖµ£¬ÄãÒ²¿ÉÒÔÉÔºóʹÓÃDOMElement->nodeValueÊôÐÔÆäÖµ¡£

2¡¢DOMText createTextNode(string $content)£ºÕâ¸ö·½·¨´´½¨ÁËÒ»¸öDOMTextÀàµÄʵÀý£¬$content²ÎÊý±íʾеÄÎı¾½ÚµãµÄÎı¾ÄÚÈÝ¡£

3¡¢DOMNode DOMNode::appendChild(DOMNode $newnode)£ºÕâ¸öº¯ÊýÀ©Õ¹ÁËÏÖÓÐ×Ó½Úµãĩβ$newnode²ÎÊý£¬»ò´´½¨Ò»¸öеİüÀ¨Ö¸¶¨½ÚµãµÄ×Ó½ÚµãÁÐ±í¡£

4¡¢DOMNode DOMNode::insertBefore(DOMNode $newnode [,DOMNode $refnode])£ºÕâ¸ö·½·¨ÔÚ$refnode½ÚµãÇ°²åÈë$newnode²ÎÊý£¬Èç¹û$refnode½Úµã¶ªÊ§£¬Ð嵀 ½Úµã¾ÍÌí¼Óµ½½ÚµãµÄ×Ó½ÚµãÁбíÇ°¡£

ÏÂÃæµÄÀý×Ó´´½¨ÁËÒ»¸ö<bibliography>½Úµã£¬²¢½«Æä×·¼Óµ½½ÚµãµÄĩβ£º

//´´½¨Ò»¸öÐÂÔªËØ   
$newElement = $dom->createElement('bibliography','Martin Didier, Professional XML');  
//ʹÓÃappendChildº¯Êý½«Æä×·¼Óµ½¸ù½Úµã  
//µ÷ÓÃappendChildº¯Êý  
appendNewChild($root,$newElement);  
//Õâ¸öº¯Êý×·¼ÓÁËÒ»¸öеÄ×Ó½Úµã  
function appendNewChild($currentNode, $node)  
{  
   $currentNode->appendChild($node);  
} 

Èç¹ûÄãͨ¹ýgetNodeInfo()º¯ÊýÔËÐеóö½á¹û£¬Ä㽫»á¿´µ½Èçͼ2ËùʾµÄÊä³ö¡£

ͼ- 2 ×·¼ÓµÄ½Úµã£ºÕâ¸öͼÏÔʾÁËмӵÄ<bibliography>½ÚµãºÍËüµÄÄÚÈÝ

ÏÂÃæµÄÀý×ÓÊÇÔÚ<publisher>½ÚµãÔö¼ÓÒ»¸ö<foreword>×ӽڵ㣺

//´´½¨Ò»¸öеÄ<foreword>ÔªËØ  
$newElement = $dom->createElement('foreword',  
   'What I love about this book is that it '.  
   'grew out of just such a process, '.  
   'and shows it on every page.');  
//ÉèÖÃÒýÓÃ½Úµã  
$allContents = $dom->getElementsByTagName('publisher');  
$contents = $allContents->item(0);  
//µ÷ÓÃinsertNewChildº¯Êý   
insertNewChild($contents,$newElement);  
//Õâ¸öº¯Êý²åÈëÒ»¸öеÄ×Ó½Úµã×÷Ϊ $currentNodeµÄµÚÒ»¸ö×Ó½Úµã  
function insertNewChild($currentNode, $node)  
{  
   $currentNode->insertBefore(  
      $node, $currentNode->firstChild);     
} 

ͨ¹ýgetNodesInfoÔËÐÐÐ޸ĺóµÄÎĵµ£¬ÏÔʾеĽڵ㣬Èçͼ3Ëùʾ¡£

ͼ- 3 ²åÈë½Úµã£ºÕâÕÅͼƬÏÔʾÁËÔÚ<publisher>½ÚµãÇ°²åÈëÁË<foreward>×Ó½Úµã

½Úµã¿Ë¡

¿Ë¡һ¸ö½ÚµãÒâζ×Å´´½¨Ò»¸öºÍµ±Ç°½ÚµãһģһÑùµÄ½Úµã£¬¿Ë¡½ÚµãʱʹÓÃcloneNode·½·¨¡£

DOMNode DOMNode::cloneNode([ bool $deep])£º´´½¨µ±Ç°µÄ¿Ë¡£¬$deep²ÎÊýÖ¸¶¨ÊÇ·ñÒª¿½±´µ±Ç°½ÚµãµÄ×ӽڵ㣬ÆäĬÈÏÖµÊÇfalse¡£ÏÂÃæµÄʾÀý´úÂëÏÔʾ¿Ë¡ <author>ÔªËØ£¬²¢×÷ΪԴ<author>ÔªËصÄ×ӽڵ㣬ͼ4ÏÔʾÁËÊä³öÄÚÈÝ£º

//ÉèÖÃÒýÓÃ½Úµã  
$author = $root->getElementsByTagName('author')->item(0);  
//µ÷ÓÃcloningNodeº¯Êý  
cloningNode($author);   
//Õâ¸öº¯Êý¿Ë¡$currentNode  
function cloningNode($currentNode)  
   {  
      $clonenode = $currentNode -> cloneNode(true);  
      $newnode = $currentNode->appendChild($clonenode);     
   } 

ͼ- 4 ¿Ë¡½Úµã£º¿Ë¡<author>×ӽڵ㲢½«Æä·ÅÔÚÔ´<author>½ÚµãÏ£¬Ô´½ÚµãµÄÎı¾Öµ±ä³ÉÁ½·ÝÁË£¬ÒòΪ¼ìË÷½ÚµãµÄÎı¾ÖµÊ±Ò²¼ìË÷ÁËÆä×Ó½ÚµãµÄ Öµ

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ÒƳý×Ó½Úµã

ʹÓÃremoveChild·½·¨´ÓDOMÊ÷ÖÐÒƳý×ӽڵ㡣

DOMNode DOMNode::removeChild(DOMNode $oldnode)£ºÕâ¸öº¯ÊýÒƳýÒ»¸ö×ӽڵ㣬$oldnode²ÎÊýÖ¸³öÒªÒƳýµÄ×ӽڵ㡣ÏÂÃæµÄʾÀý´úÂë´ÓBook.xmlÎĵµÖÐÒƳý×Ó ½Úµã£¬´Óͼ5ÖÐÏÔʾµÄÊä³öÄÚÈÝ¿ÉÒÔ¿´µ½bibliography½ÚµãÏûʧÁË¡£

ͼ- 5 ÒƳý½Úµã£ºÒƳý×îºóÒ»¸ö×Ó½Úµã<bibliography>ºó£¬ÖØÐÂÁгöÁ˽ڵãµÄÃû³ÆÖµ£¬ÏÔʾ½Úµãȷʵ±»ÒƳýÁË

Ìæ»»½Úµã

ΪÁËÓÃÒ»¸öнڵãÌæ»»ÒÑÓеĽڵ㣬ʹÓÃreplaceChild·½·¨¡£

DOMNode DOMNode::replaceChild(DOMNode $newnode, DOMNode $oldnode)£ºÕâ¸öº¯ÊýʹÓÃ$newnode×Ó½ÚµãÌæ»»$oldnode½Úµã¡£

ÀýÈ磬¼ÙÉèÄãÏëÓÃеÄcode×Ó½ÚµãÌæ»»ISBN×ӽڵ㣺

//»ñÈ¡ISBN½Úµã  
$element = $dom->getElementsByTagName('ISBN')->item(0);   
//´´½¨ÐµÄ<code>ÔªËØ   
$code = $dom->createElement('code', '909090');  
//µ÷ÓÃreplacingNodeº¯Êý   
replacingNode($code,$element);  
//Õâ¸öº¯ÊýʹÓÃ$nodeÌæ»»$currentNode   
function replacingNode($currentNode, $node)  
{  
   $node->parentNode->replaceChild($currentNode, $node);     
} 

ͼ6ÖÐÏÔʾµÄÊä³öÄÚÈݱíÃ÷½Úµã±»Ìæ»»ÁË

ͼ- 6 Ìæ»»½Úµã£ºÕâÀïÏÔʾµÄÊÇÓÃеÄ<code>½ÚµãÌæ»»<ISBN>½ÚµãºóµÄÎĵµÄÚÈÝ

µ¼Èë½Úµã

ʹÓÃimportNode·½·¨´ÓÁíÒ»¸öÊ÷¿½±´Ò»¸ö½Úµãµ½µ±Ç°µÄÊ÷¡£

DOMNode DOMDocument::importNode(DOMNode $importedNode [,bool $deep])£ºÕâ¸ö·½·¨´ÓÁíÒ»¸öXMLÎĵµµ¼ÈëÒ»¸ö½Úµã£¬È»ºó²åÈ뵱ǰÎĵµµÄDOMÊ÷ÖУ¬ $importedNode²ÎÊýÖ¸³öÁËÒªµ¼ÈëµÄ½Úµã£¬µ¼ÈëµÄ½Úµã±íʾԭʼ½ÚµãµÄÒ»·Ý¿½±´£¬Òò´Ëµ¼Èë²Ù×÷²»»áÐÞ¸ÄÍⲿÊ÷£¬$deep²ÎÊý¿ØÖÆÊÇ·ñµ¼Èë±»µ¼Èë½ÚµãµÄÉî¶È£¬ÖµÎª TRUEʱ£¬µ¼ÈëÍêÕûµÄ½Úµã×ÓÊ÷£¬ÎªFALSEʱ£¬Ö»µ¼Èë½Úµã±¾Éí¡£

ÏÂÃæµÄʾÀý´ÓBook_continue.xmlÎļþµ¼Èë<continue>½Úµãµ½Book.xml£¬ÏÂÃæÊÇBook_continue.xmlÎĵµµÄÄÚÈÝ£º

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?> 
<!--chapter V--> 
<continue> 
  <chapter_V> 
   <title>XPath</title> 
   <content>XPath is language for...</content> 
  </chapter_V> 
  <![CDATA[  
     This chaper is a bonus to...  
     ]]> 
  <printing cap_I="click_here_for_chapter_I"   
    cap_II="click_here_for_chapter_II"     
    cap_III="click_here_for_chapter_III" 
    cap_IV="click_here_for_chapter_IV"   
    cap_V="click_here_for_chapter_V" /> 
</continue> 
ÏÂÃæÊǵ¼Èë<continue>½ÚµãµÄ´úÂ룺  
<?php 
$olddoc = new DOMDocument;  
$olddoc->load("Book_continue.xml");  
//ÎÒÏëµ¼Èëµ½Ò»¸öÐÂÎĵµµÄ½Úµã  
$node = $olddoc->getElementsByTagName("continue")->item(0);  
$newnewdoc = new DOMDocument;  
$newdoc->formatOutput = true;  
$newdoc->load("Book.xml");  
//µ¼Èë½Úµã¼°ÆäËùÓÐ×ӽڵ㵽Îĵµ  
$node = $newdoc->importNode($node, true);  
//È»ºó×·¼Óµ½¸ù½Úµã  
$newdoc->documentElement->appendChild($node);  
echo "\nThe 'new document' after copying the nodes into it:\n";  
$root = $newdoc->firstChild;  
function getNodesInfo($node)  
{  
   if ($node->hasChildNodes())  
   {  
      $subNodes = $node->childNodes;  
      foreach ($subNodes as $subNode)  
      {  
         if (($subNode->nodeType != 3) ||   
            (($subNode->nodeType ==3) &&  
            (strlen(trim($subNode->wholeText))>=1)))     
         {  
         echo "Node name: ".$subNode->nodeName."\n";  
         echo "Node value: ".$subNode->nodeValue."\n";  
      }  
      getNodesInfo($subNode);           
      }  
   }        
}  
getNodesInfo($root);     
?> 

ͼ7ÏÔʾǰÃæ´úÂëµÄÊä³ö

ͼ- 7 µ¼Èë½Úµã£ºÕâÀïÏÔʾÁË´ÓBook_continue.xmlµ¼Èë½Úµã²¢×·¼Óµ½Book.xmlºóµÄÑù×Ó

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¼ì²éÁ½¸ö½ÚµãÊÇ·ñÏàͬʹÓÃisSameNode·½·¨¡£

bool DOMNode::isSameNode(DOMNode $node)£ºµ±½ÚµãÊÇÏàµÈµÄʱºò£¬Õâ¸öº¯Êý·µ»ØÒ»¸ö²¼¶ûÖµTRUE£¬·ñÔò·µ»ØFALSE£¬$node²ÎÊý±íʾÄãÒªºÍµ±Ç°½Úµã½øÐÐ±È½Ï µÄ½Úµã¡£

×¢Òâ±È½Ï²»ÊÇ»ùÓÚ½ÚµãµÄÄÚÈݽøÐеģº

//¼ì²éÁ½¸ö½ÚµãÊÇ·ñÏàͬ  
$author1 = $root->getElementsByTagName('autor')->item(0);  
$author2 = $root->getElementsByTagName('autor')->item(1);  
//µ÷ÓÃverifyNodesº¯Êý  
verifyNodes($author1,$author2);  
function verifyNodes($currentNode, $node)  
{  
   if (($currentNode->isSameNode($node))==true)  
   {  
      echo "These two nodes are the same";  
   }     
} 

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<?php   
  //´´½¨Ò»¸öÎĵµÊµÀý   
  $document = new DOMDocument();  
  //ʹÓÃËõ½ø¸ñʽ»¯Êä³ö  
  $document->formatOutput = true;  
  //´´½¨Ò»¸ö×¢ÊÍ  
  $comment = $document->createComment('Beautiful flowers!!!');  
  $document->appendChild( $comment );   
  //´´½¨<flowers>¸ùÔªËØ   
  $root = $document->createElement( 'flowers' );  
  $document->appendChild( $root );  
  //´´½¨<tulips>×Ó½Úµã  
  $tulips = $document->createElement( 'tulips' );  
  //´´½¨<tulips>ÔªËصĵÚÒ»¸ö×Ó½Úµã<bulbs>£¬²¢ÉèÖÃÆäÊôÐÔ  
   $bulbs_1 = $document->createElement( 'bulbs' );     
  $bulbs_1->setAttribute('price','€ 7.65');  
  $bulbs_1->appendChild($document->createTextNode( 'Parrot'));  
  $tulips->appendChild( $bulbs_1 );  
  //´´½¨<tulips>ÔªËصĵڶþ¸ö×Ó½Úµã<bulbs>£¬²¢ÉèÖÃÆäÊôÐÔ  
  $bulbs_2 = $document->createElement( 'bulbs' );      
  $bulbs_2->setAttribute('color','magenta');  
  $bulbs_2->appendChild($document->createTextNode( 'Lily flowering' ));  
  $tulips->appendChild( $bulbs_2 );  
  //×·¼Ó<tulips>½Úµãµ½¸ù½Úµãºó  
  $root->appendChild( $tulips );  
  //´´½¨CDATAС½Ú  
  $cdata = $document->createCDATASection(  
    '<gladiolus><species>Sword Lily</species>'.  
    '<species>Starface</species></gladiolus>');  
  $document->appendChild( $cdata );   
  //±£´æ¶ÔÏóÊ÷µ½Flowers.xml   
  echo $document->saveXML();  
  $document->save('Flowers.xml');  
?> 
еÄFlower.xmlÎĵµÄÚÈÝÈçÏ£º  
<?xml version="1.0" encoding="ISO-8859-1"?> 
<!--Beautiful flowers!!!--> 
<flowers> 
  <tulips> 
    <bulbs price="€ 7.65">Parrot</bulbs> 
    <bulbs color="magenta">Lily flowering</bulbs> 
  </tulips> 
</flowers> 
<![CDATA
[<gladiolus>  
    <species>Sword Lily</species>  
    <species>Starface</species>  
  </gladiolus>  
]]> 

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