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＞
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