使用PHP 5.0 轻松解析XML文档
用dom方式,倒是好些,但是他把每个节点都看作是一个node，操作起来要写好多的代码, 麻烦!
网上有好多的开源的xml解析的类库, 以前看过几个，但是心里总是觉得不踏实，感觉总是跟在别人的屁股后面.
这几天在搞Java, 挺累的，所以决定换换脑袋，写点PHP代码，为了防止以后xml解析过程再令我犯难，就花了一天的时间写了下面一个xml解析的类，于是就有了下面的东西。
实现方式是通过包装"sax方式的解析结果"来实现的. 总的来说，对于我个人来说挺实用的，性能也还可以，基本上可以完成大多数的处理要求。
功能:
1、 对基本的xml文件的节点进行 查询 / 添加 / 修改 / 删除 工作.
2、导出xml文件的所有数据到一个数组里面.
3、整个设计采用了oo方式,在操作结果集的时候, 使用方法类似于dom
缺点:
1、 每个节点最好都带有一个id(看后面的例子), 每个“节点名字”=“节点的标签_节点的id”，如果这个id值没有设置，程序将自动给他产生一个id，这个id就是这个节点在他的上级节点中的位置编号，从0开始。
2、 查询某个节点的时候可以通过用“|”符号连接“节点名字”来进行。这些“节点名字”都是按顺序写好的上级节点的名字。
使用说明：
运行下面的例子，在执行结果页面上可以看到函数的使用说明
代码是通过php5来实现的，在php4中无法正常运行。
由于刚刚写完，所以没有整理文档，下面的例子演示的只是一部分的功能，代码不是很难，要是想知道更多的功能，可以研究研究源代码。
目录结构:
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＞华联＜/name＞ ＜address＞北京长安街－9999号＜/address＞ ＜desc＞连锁超市＜/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"＞好东西推荐＜/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 = $test-＞getSimpleDocument(); echo "＜pre＞"; echo "＜hr＞＜font color=red＞"; echo "下面是通过函数getSaveData()返回的整个xml数据的数组"; echo "＜/font＞＜hr＞"; print_r($dom-＞getSaveData()); echo "＜hr＞＜font color=red＞"; echo "下面是通过setValue()函数，给给根节点添加信息，添加后显示出结果xml文件的内容"; echo "＜/font＞＜hr＞"; $dom-＞setValue("telphone", "123456789"); echo htmlspecialchars($dom-＞getSaveXml()); echo "＜hr＞＜font color=red＞"; echo "下面是通过getNode()函数，返回某一个分类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 "下面是通过findNodeByPath()函数，返回某一商品的信息"; echo "＜/font＞＜hr＞"; $obj = $dom-＞findNodeByPath("cat_food|goods_food11"); if(!is_object($obj)){ echo "该商品不存在"; }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 "下面是通过setValue()函数，给商品\"food11\"添加属性, 然后显示添加后的结果"; echo "＜/font＞＜hr＞"; $obj = $dom-＞findNodeByPath("cat_food|goods_food11"); $obj-＞setValue("leaveword", array("value"=＞"这个商品不错", "attrs"=＞array("author"=＞"hahawen", "date"=＞date('Y-m-d')))); echo htmlspecialchars($dom-＞getSaveXml()); echo "＜hr＞＜font color=red＞"; echo "下面是通过removeValue()/removeAttribute()函数， 给商品\"food11\"改变和删除属性, 然后显示操作后的结果"; 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 "下面是通过createNode()函数，添加商品, 然后显示添加后的结果"; 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 "下面是通过removeNode()函数，删除商品, 然后显示删除后的结果"; echo "＜/font＞＜hr＞"; $obj = $dom-＞findNodeByPath("cat_food"); $obj-＞removeNode("goods_food12"); echo htmlspecialchars($dom-＞getSaveXml()); ?＞
文件:SimpleDocumentParser.PHP
＜?php
/**
*=========================================================
*
* @author hahawen(大龄青年)
* @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(大龄青年)
* @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(大龄青年)
* @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(大龄青年)
* @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);
}
}
?＞
下面是例子运行对结果:
下面是通过函数getSaveData()返回的整个XML数据的数组
Array
(
[name] =＞ 华联
[address] =＞ 北京长安街－9999号
[desc] =＞ 连锁超市
[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] =＞ 好东西推荐
[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
)
)
)
下面是通过setValue()函数，给给根节点添加信息，添加后显示出结果xml文件的内容
＜?xml version="1.0" encoding="GB2312" ?＞
＜shop＞
＜name＞华联＜/name＞
＜address＞北京长安街－9999号＜/address＞
＜desc＞连锁超市＜/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"＞好东西推荐＜/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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