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使用PHP 5.0 輕松解析XML文檔
編輯:XML詳解     
x方式的時候,要自己構建3個函數,而且要直接用這三的函數來返回數據, 要求較強的邏輯。 在處理不同結構的XML的時候, 還要重新進行構造這三個函數,麻煩!

用dom方式,倒是好些,但是他把每個節點都看作是一個node,操作起來要寫好多的代碼, 麻煩!

網上有好多的開源的XML解析的類庫, 以前看過幾個,但是心裡總是覺得不踏實,感覺總是跟在別人的屁股後面.

這幾天在搞Java, 挺累的,所以決定換換腦袋,寫點PHP代碼,為了防止以後xml解析過程再令我犯難,就花了一天的時間寫了下面一個XML解析的類,於是就有了下面的東西。

實現方式是通過包裝"sax方式的解析結果"來實現的. 總的來說,對於我個人來說挺實用的,性能也還可以,基本上可以完成大多數的處理要求。

功能:

1、 對基本的XML文件的節點進行 查詢 / 添加 / 修改 / 刪除 工作.

2、導出XML文件的所有數據到一個數組裡面.

3、整個設計采用了oo方式,在操作結果集的時候, 使用方法類似於dom

缺點:

1、 每個節點最好都帶有一個id(看後面的例子), 每個“節點名字”=“節點的標簽_節點的id”,如果這個id值沒有設置,程序將自動給他產生一個id,這個id就是這個節點在他的上級節點中的位置編號,從0開始。

2、 查詢某個節點的時候可以通過用“|”符號連接“節點名字”來進行。這些“節點名字”都是按順序寫好的上級節點的名字。

使用說明:

運行下面的例子,在執行結果頁面上可以看到函數的使用說明

代碼是通過php5來實現的,在PHP4中無法正常運行。

由於剛剛寫完,所以沒有整理文檔,下面的例子演示的只是一部分的功能,代碼不是很難,要是想知道更多的功能,可以研究研究源代碼。

目錄結構:

test.PHP

test.XML

XML / SimpleDocumentBase.PHP

XML / SimpleDocumentNode.PHP

XML / SimpleDocumentRoot.PHP

XML / SimpleDocumentParser.PHP

文件:test.XML

<?XML version="1.0" encoding="GB2312"?><shop> <name>華聯</name> <address>北京長安街-9999號</address> <desc>連鎖超市</desc> <cat id="food"> <goods id="food11"> <name>food11</name> <price>12.90</price> </goods> <goods id="food12"> <name>food12</name> <price>22.10</price> <desc creator="hahawen">好東西推薦</desc> </goods> </cat> <cat> <goods id="tel21"> <name>tel21</name> <price>1290</price> </goods> </cat> <cat id="coat"> <goods id="coat31"> <name>coat31</name> <price>112</price> </goods> <goods id="coat32"> <name>coat32</name> <price>45</price> </goods> </cat> <special id="hot"> <goods> <name>hot41</name> <price>99</price> </goods> </special></shop>

文件:test.PHP

<?PHP

require_once "xml/SimpleDocumentParser.php"; require_once "xml/SimpleDocumentBase.php"; require_once "xml/SimpleDocumentRoot.php"; require_once "XML/SimpleDocumentNode.PHP"; $test = new SimpleDocumentParser(); $test->parse("test.xml"); $dom = $test->getSimpleDocument(); echo "<pre>"; echo "<hr><font color=red>"; echo "下面是通過函數getSaveData()返回的整個xml數據的數組"; echo "</font><hr>"; print_r($dom->getSaveData()); echo "<hr><font color=red>"; echo "下面是通過setValue()函數,給給根節點添加信息,添加後顯示出結果xml文件的內容"; echo "</font><hr>"; $dom->setValue("telphone", "123456789"); echo htmlspecialchars($dom->getSaveXml()); echo "<hr><font color=red>"; echo "下面是通過getNode()函數,返回某一個分類下的所有商品的信息"; echo "</font><hr>"; $obj = $dom->getNode("cat_food"); $nodeList = $obj->getNode(); foreach($nodeList as $node){ $data = $node->getValue(); echo "<font color=red>商品名:".$data[name]."</font><br>"; print_R($data); print_R($node->getAttribute()); } echo "<hr><font color=red>"; echo "下面是通過findNodeByPath()函數,返回某一商品的信息"; echo "</font><hr>"; $obj = $dom->findNodeByPath("cat_food|goods_food11"); if(!is_object($obj)){ echo "該商品不存在"; }else{ $data = $obj->getValue(); echo "<font color=red>商品名:".$data[name]."</font><br>"; print_R($data); print_R($obj->getAttribute()); } echo "<hr><font color=red>"; echo "下面是通過setValue()函數,給商品\"food11\"添加屬性, 然後顯示添加後的結果"; echo "</font><hr>"; $obj = $dom->findNodeByPath("cat_food|goods_food11"); $obj->setValue("leaveWord", array("value"=>"這個商品不錯", "attrs"=>array("author"=>"hahawen", "date"=>date('Y-m-d')))); echo htmlspecialchars($dom->getSaveXml()); echo "<hr><font color=red>"; echo "下面是通過removeValue()/removeAttribute()函數, 給商品\"food11\"改變和刪除屬性, 然後顯示操作後的結果"; echo "</font><hr>"; $obj = $dom->findNodeByPath("cat_food|goods_food12"); $obj->setValue("name", "new food12"); $obj->removeValue("desc"); echo htmlspecialchars($dom->getSaveXml()); echo "<hr><font color=red>"; echo "下面是通過createNode()函數,添加商品, 然後顯示添加後的結果"; echo "</font><hr>"; $obj = $dom->findNodeByPath("cat_food"); $newObj = $obj->createNode("goods", array("id"=>"food13")); $newObj->setValue("name", "food13"); $newObj->setValue("price", 100); echo htmlspecialchars($dom->getSaveXML()); echo "<hr><font color=red>"; echo "下面是通過removeNode()函數,刪除商品, 然後顯示刪除後的結果"; echo "</font><hr>"; $obj = $dom->findNodeByPath("cat_food"); $obj->removeNode("goods_food12"); echo Htmlspecialchars($dom->getSaveXML()); ?>

文件:SimpleDocumentParser.PHP

<?PHP

/**

*=========================================================

*

* @author hahawen(大齡青年)

* @since 2004-12-04

* @copyright Copyright (c) 2004, NxCoder Group

*

*=========================================================

*/

/**

* class SimpleDocumentParser

* use SAX parse XML file, and build SimpleDocumentObject

* all this pachage's is work for XML file, and method is action as DOM.

*

* @package SmartWeb.common.XML

* @version 1.0

*/

class SimpleDocumentParser

{

private $domRootObject = null;

private $currentNO = null;

private $currentName = null;

private $currentValue = null;

private $currentAttribute = null;

public function getSimpleDocument() {

return $this->domRootObject;

}

public function parse($file)

{

$xmlParser = XML_parser_create();

xml_parser_set_option($xmlParser,XML_OPTION_CASE_FOLDING, 0);

xml_parser_set_option($xmlParser,XML_OPTION_SKIP_WHITE, 1);

xml_parser_set_option($xmlParser, XML_OPTION_TARGET_ENCODING, 'UTF-8');

xml_set_object($XMLParser, $this);

xml_set_element_handler($XMLParser, "startElement", "endElement");

xml_set_character_data_handler($XMLParser, "characterData");

if (!xml_parse($XMLParser, file_get_contents($file)))

dIE(sprintf("XML error: %s at line %d", xml_error_string(xml_get_error_code($xmlParser)),xml_get_current_line_number($XMLParser)));

xml_parser_free($XMLParser);

}

private function startElement($parser, $name, $attrs)

{

$this->currentName = $name;

$this->currentAttribute = $attrs;

if($this->currentNO == null)

{

$this->domRootObject = new SimpleDocumentRoot($name);

$this->currentNO = $this->domRootObject;

}

else

{

$this->currentNO = $this->currentNO->createNode($name, $attrs);

}

}

private function endElement($parser, $name)

{

if($this->currentName==$name)

{

$tag = $this->currentNO->getSeq();

$this->currentNO = $this->currentNO->getPNodeObject();

if($this->currentAttribute!=null && sizeof($this->currentAttribute)>0)

$this->currentNO->setValue($name, array('value'=>$this->currentValue, 'attrs'=>$this->currentAttribute));

else

$this->currentNO->setValue($name, $this->currentValue);

$this->currentNO->removeNode($tag);

}

else

{

$this->currentNO = (is_a($this->currentNO, 'SimpleDocumentRoot'))? null: $this->currentNO->getPNodeObject();

}

}

private function characterData($parser, $data)

{

$this->currentValue = iconv('UTF-8', 'GB2312', $data);

}

function __destruct()

{

unset($this->domRootObject);

}

}

?>

文件:SimpleDocumentBase.PHP

<?PHP

/**

*=========================================================

*

* @author hahawen(大齡青年)

* @since 2004-12-04

* @copyright Copyright (c) 2004, NxCoder Group

*

*=========================================================

*/

/**

* abstract class SimpleDocumentBase

* base class for XML file parse

* all this pachage's is work for XML file, and method is action as DOM.

*

* 1\ add/update/remove data of XML file.

* 2\ explode data to array.

* 3\ rebuild XML file

*

* @package SmartWeb.common.XML

* @abstract

* @version 1.0

*/

abstract class SimpleDocumentBase

{

private $nodeTag = null;

private $attributes = array();

private $values = array();

private $nodes = array();

function __construct($nodeTag)

{

$this->nodeTag = $nodeTag;

}

public function getNodeTag()

{

return $this->nodeTag;

}

public function setValues($values){

$this->values = $values;

}

public function setValue($name, $value)

{

$this->values[$name] = $value;

}

public function getValue($name=null)

{

return $name==null? $this->values: $this->values[$name];

}

public function removeValue($name)

{

unset($this->values["$name"]);

}

public function setAttributes($attributes){

$this->attributes = $attributes;

}

public function setAttribute($name, $value)

{

$this->attributes[$name] = $value;

}

public function getAttribute($name=null)

{

return $name==null? $this->attributes: $this->attributes[$name];

}

public function removeAttribute($name)

{

unset($this->attributes["$name"]);

}

public function getNodesSize()

{

return sizeof($this->nodes);

}

protected function setNode($name, $nodeId)

{

$this->nodes[$name] = $nodeId;

}

public abstract function createNode($name, $attributes);

public abstract function removeNode($name);

public abstract function getNode($name=null);

protected function getNodeId($name=null)

{

return $name==null? $this->nodes: $this->nodes[$name];

}

protected function createNodeByName($rootNodeObj, $name, $attributes, $pId)

{

$tmpObject = $rootNodeObj->createNodeObject($pId, $name, $attributes);

$key = isset($attributes[id])? $name.'_'.$attributes[id]: $name.'_'.$this->getNodesSize();

$this->setNode($key, $tmpObject->getSeq());

return $tmpObject;

}

protected function removeNodeByName($rootNodeObj, $name) {

$rootNodeObj->removeNodeById($this->getNodeId($name));

if(sizeof($this->nodes)==1)

$this->nodes = array();

else

unset($this->nodes[$name]);

}

protected function getNodeByName($rootNodeObj, $name=null)

{

if($name==null)

{

$tmpList = array();

$tmpIds = $this->getNodeId();

foreach($tmpIds as $key=>$id)

$tmpList[$key] = $rootNodeObj->getNodeById($id);

return $tmpList;

}

else

{

$id = $this->getNodeId($name);

if($id===null)

{

$tmpIds = $this->getNodeId();

foreach($tmpIds as $tkey=>$tid)

{

if(strpos($key, $name)==0)

{

$id = $tid;

break;

}

}

}

return $rootNodeObj->getNodeById($id);

}

}

public function findNodeByPath($path)

{

$pos = strpos($path, '|');

if($pos<=0)

{

return $this->getNode($path);

}

else

{

$tmpObj = $this->getNode(substr($path, 0, $pos));

return is_object($tmpObj)? $tmpObj->findNodeByPath(substr($path, $pos+1)): null;

}

}

public function getSaveData()

{

$data = $this->values;

if(sizeof($this->attributes)>0)

$data[attrs] = $this->attributes;

$nodeList = $this->getNode();

if($nodeList==null)

return $data;

foreach($nodeList as $key=>$node)

{

$data[$key] = $node->getSaveData();

}

return $data;

}

public function getSaveXML($level=0)

{

$prefixSpace = str_pad("", $level, "\t");

$str = "$prefixSpace<$this->nodeTag";

foreach($this->attributes as $key=>$value)

$str .= " $key=\"$value\"";

$str .= ">\r\n";

foreach($this->values as $key=>$value){

if(is_array($value))

{

$str .= "$prefixSpace\t<$key";

foreach($value[attrs] as $attkey=>$attvalue)

$str .= " $attkey=\"$attvalue\"";

$tmpStr = $value[value];

}

else

{

$str .= "$prefixSpace\t<$key";

$tmpStr = $value;

}

$tmpStr = trim(trim($tmpStr, "\r\n"));

$str .= ($tmpStr===null || $tmpStr==="")? " />\r\n": ">$tmpStr</$key>\r\n";

}

foreach($this->getNode() as $node)

$str .= $node->getSaveXML($level+1)."\r\n";

$str .= "$prefixSpace</$this->nodeTag>";

return $str;

}

function __destruct()

{

unset($this->nodes, $this->attributes, $this->values);

}

}

?>

文件:SimpleDocumentRoot.PHP

<?PHP

/**

*=========================================================

*

* @author hahawen(大齡青年)

* @since 2004-12-04

* @copyright Copyright (c) 2004, NxCoder Group

*

*=========================================================

*/

/**

* class SimpleDocumentRoot

* XML root class, include values/attributes/subnodes.

* all this pachage's is work for XML file, and method is action as DOM.

*

* @package SmartWeb.common.XML

* @version 1.0

*/

class SimpleDocumentRoot extends SimpleDocumentBase

{

private $prefixStr = '<?XML version="1.0" encoding="utf-8" ?>';

private $nodeLists = array();

function __construct($nodeTag)

{

parent::__construct($nodeTag);

}

public function createNodeObject($pNodeId, $name, $attributes)

{

$seq = sizeof($this->nodeLists);

$tmpObject = new SimpleDocumentNode($this, $pNodeId, $name, $seq);

$tmpObject->setAttributes($attributes);

$this->nodeLists[$seq] = $tmpObject;

return $tmpObject;

}

public function removeNodeById($id)

{

if(sizeof($this->nodeLists)==1)

$this->nodeLists = array();

else

unset($this->nodeLists[$id]);

}

public function getNodeById($id)

{

return $this->nodeLists[$id];

}

public function createNode($name, $attributes)

{

return $this->createNodeByName($this, $name, $attributes, -1);

}

public function removeNode($name)

{

return $this->removeNodeByName($this, $name);

}

public function getNode($name=null)

{

return $this->getNodeByName($this, $name);

}

public function getSaveXML()

{

$prefixSpace = "";

$str = $this->prefixStr."\r\n";

return $str.parent::getSaveXML(0);

}

}

?>

文件:SimpleDocumentNode.PHP

<?PHP

/**

*=========================================================

*

* @author hahawen(大齡青年)

* @since 2004-12-04

* @copyright Copyright (c) 2004, NxCoder Group

*

*=========================================================

*/

/**

* class SimpleDocumentNode

* XML Node class, include values/attributes/subnodes.

* all this pachage's is work for XML file, and method is action as DOM.

*

* @package SmartWeb.common.XML

* @version 1.0

*/

class SimpleDocumentNode extends SimpleDocumentBase

{

private $seq = null;

private $rootObject = null;

private $pNodeId = null;

function __construct($rootObject, $pNodeId, $nodeTag, $seq)

{

parent::__construct($nodeTag);

$this->rootObject = $rootObject;

$this->pNodeId = $pNodeId;

$this->seq = $seq;

}

public function getPNodeObject()

{

return ($this->pNodeId==-1)? $this->rootObject: $this->rootObject->getNodeById($this->pNodeId);

}

public function getSeq(){

return $this->seq;

}

public function createNode($name, $attributes)

{

return $this->createNodeByName($this->rootObject, $name, $attributes, $this->getSeq());

}

public function removeNode($name)

{

return $this->removeNodeByName($this->rootObject, $name);

}

public function getNode($name=null)

{

return $this->getNodeByName($this->rootObject, $name);

}

}

?>

下面是例子運行對結果:

下面是通過函數getSaveData()返回的整個XML數據的數組

Array

(

[name] => 華聯

[address] => 北京長安街-9999號

[desc] => 連鎖超市

[cat_food] => Array

(

[attrs] => Array

(

[id] => food

)

[goods_food11] => Array

(

[name] => food11

[price] => 12.90

[attrs] => Array

(

[id] => food11

)

)

[goods_food12] => Array

(

[name] => food12

[price] => 22.10

[desc] => Array

(

[value] => 好東西推薦

[attrs] => Array

(

[creator] => hahawen

)

)

[attrs] => Array

(

[id] => food12

)

)

)

[cat_1] => Array

(

[goods_tel21] => Array

(

[name] => tel21

[price] => 1290

[attrs] => Array

(

[id] => tel21

)

)

)

[cat_coat] => Array

(

[attrs] => Array

(

[id] => coat

)

[goods_coat31] => Array

(

[name] => coat31

[price] => 112

[attrs] => Array

(

[id] => coat31

)

)

[goods_coat32] => Array

(

[name] => coat32

[price] => 45

[attrs] => Array

(

[id] => coat32

)

)

)

[special_hot] => Array

(

[attrs] => Array

(

[id] => hot

)

[goods_0] => Array

(

[name] => hot41

[price] => 99

)

)

)

下面是通過setValue()函數,給給根節點添加信息,添加後顯示出結果XML文件的內容

<?XML version="1.0" encoding="GB2312" ?>

<shop>

<name>華聯</name>

<address>北京長安街-9999號</address>

<desc>連鎖超市</desc>

<telphone>123456789</telphone>

<cat id="food">

<goods id="food11">

<name>food11</name>

<price>12.90</price>

</goods>

<goods id="food12">

<name>food12</name>

<price>22.10</price>

<desc creator="hahawen">好東西推薦</desc>

</goods>

</cat>

<cat>

<goods id="tel21">

<name>tel21</name>

<price>1290</price>

</goods>

</cat>

<cat id="coat">

<goods id="coat31">

<name>coat31</name>

<price>112</price>

</goods>

<goods id="coat32">

<name>coat32</name>

<price>45</price>

</goods>

</cat>

<special id="hot">

<goods>

<name>hot41</name>

<price>99</price>

</goods>

</special>

</shop>

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