使用PHP 5.0 轻松解析XML文档_PHP
用sax方式的时候,要自己构建3个函数,而且要直接用这三的函数来返回数据, 要求较强的逻辑。 在处理不同结构的xml的时候, 还要重新进行构造这三个函数,麻烦!
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>
下面是通过getNode()函数,返回某一个分类下的所有商品的信息商品名:
food11Array
(
[name] => food11
[price] => 12.90
)
Array
(
[id] => food11
)
商品名:food12Array
(
[name] => food12
[price] => 22.10
[desc] => Array
(
[value] => 好东西推荐
[attrs] => Array
(
[creator] => hahawen
)
)
)
Array
(
[id] => food12
)
下面是通过findNodeByPath()函数,返回某一商品的信息商品名:
food11Array
(
[name] => food11
[price] => 12.90
)
Array
(
[id] => food11
)
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
<?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>
<leaveword author="hahawen" date="2004-12-05">这个商品不错</leaveword>
</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>
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
<?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>
<leaveword author="hahawen" date="2004-12-05">这个商品不错</leaveword>
</goods>
<goods id="food12">
<name>new food12</name>
<price>22.10</price>
</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>
下面是通过createNode()函数,添加商品, 然后显示添加后的结果
<?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>
<leaveword author="hahawen" date="2004-12-05">这个商品不错</leaveword>
</goods>
<goods id="food12">
<name>new food12</name>
<price>22.10</price>
</goods>
<goods id="food13">
<name>food13</name>
<price>100</price>
</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>
下面是通过removeNode()函数,删除商品, 然后显示删除后的结果
<?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>
<leaveword author="hahawen" date="2004-12-05">这个商品不错</leaveword>
</goods>
<goods id="food13">
<name>food13</name>
<price>100</price>
</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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