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用PHP5轻松解析XML2007-09-20 13:58:00

【评论】【打印】【字体：大中小】本文链接：http://blog.pfan.cn/tiay/29549.html

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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 = ''; 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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