Easily parse XML with PHP5_PHP tutorial
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.xml
xml / SimpleDocumentBase.php
xml / SimpleDocumentNode.php
xml / SimpleDocumentRoot.php
xml / SimpleDocumentParser.php
北京长安街-9999号
文件:test.php
require_once "xml/SimpleDocumentBase.php";
require_once "xml/SimpleDocumentRoot.php";
require_once "xml/SimpleDocumentNode.php";
$test->parse("test.xml");
$dom = $test->getSimpleDocument();
";
";
echo "下面是通过函数getSaveData()返回的整个xml数据的数组";
echo "
";
print_r($dom->getSaveData());
";
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 "
";
$dom->setValue("telphone", "123456789");
echo htmlspecialchars($dom->getSaveXml());
";
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 "
";
$obj = $dom->getNode("cat_food");
$nodeList = $obj->getNode();
foreach($nodeList as $node){
$data = $node->getValue();
echo "商品名:".$data[name]."
";
print_R($data);
print_R($node->getAttribute());
}
";
echo "下面是通过findNodeByPath()函数,返回某一商品的信息";
echo "
";
$obj = $dom->findNodeByPath("cat_food|goods_food11");
if(!is_object($obj)){
echo "该商品不存在";
}else{
$data = $obj->getValue();
echo "商品名:".$data[name]."
";
print_R($data);
print_R($obj->getAttribute());
}
";
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 "
";
$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 "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 "
";
$obj = $dom->findNodeByPath("cat_food|goods_food12");
$obj->setValue("name", "new food12");
$obj->removeValue("desc");
echo htmlspecialchars($dom->getSaveXml());
";
echo "下面是通过createNode()函数,添加商品, 然后显示添加后的结果";
echo "
";
$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 "下面是通过removeNode()函数,删除商品, 然后显示删除后的结果";
echo "
";
$obj = $dom->findNodeByPath("cat_food");
$obj->removeNode("goods_food12");
echo htmlspecialchars($dom->getSaveXml());
?>
*================================================
*
* @author hahawen(大龄青年)
* @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 $currentName = null;
private $currentValue = null;
private $currentAttribute = null;
function getSimpleDocument()
{
return $this->domRootObject;
}
{
$xmlParser = xml_parser_create();
xml_parser_set_option($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, $this);
xml_set_character_data_handler($xmlParser,
"characterData");
xml_get_current_line_number($xmlParser)));
{
$this->currentName = $name;
$this->currentAttribute = $attrs;
if($this->currentNO == null)
{
$this->domRootObject = new SimpleDocumentRoot($name);
}
else
{
$this->currentNO = $this->currentNO->createNode($name, $attrs);
}
{
if($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);
}
else
{
$this->currentNO = (is_a($this->currentNO, 'SimpleDocumentRoot'))? null:
$this->currentNO->getPNodeObject();
}
}
{
$this->currentValue = iconv('UTF-8', 'GB2312', $data);
}
function __destruct()
{
unset($this->domRootObject);
}
?>
*=================================================
*
* @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 $values =
array();
{
$this->nodeTag = $nodeTag;
}
{
return $this->nodeTag;
}
$this->values = $values;
}
{
$this->values[$name] = $value;
}
{
return $name==null?
$this->values: $this->values[$name];
}
{
unset($this->values["$name"]);
}
$this->attributes = $attributes;
}
{
$this->attributes[$name] = $value;
}
{
return $name==null? $this->attributes:
$this->attributes[$name];
}
{
unset($this->attributes["$name"]);
}
{
return sizeof($this->nodes);
}
{
$this->nodes[$name]
= $nodeId;
}
{
return $name==null? $this->nodes: $this->nodes[$name];
}
{
$tmpObject = $rootNodeObj->createNodeObject($pId, $name, $attributes);
$key = isset($attributes[id])?
$name.'_'.$attributes[id]: $name.'_'.$this->getNodesSize();
$this->setNode($key, $tmpObject->getSeq());
return $tmpObject;
}
{
$rootNodeObj->removeNodeById($this->getNodeId($name));
if(sizeof($this->nodes)==1)
$this->nodes = array();
else
unset($this->nodes[$name]);
}
{
if($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 = $this->getNodeId();
{
if(strpos($key, $name)==0)
{
$id = $tid;
break;
}
}
}
return $rootNodeObj->getNodeById($id);
}
}
{
$pos = strpos($path, '|');
if($pos {
return $this->getNode($path);
}
else
{
$pos));
$tmpObj->findNodeByPath(substr($path,
$pos+1)):
null;
}
}
{
$data = $this->values;
if(sizeof($this->attributes)>0)
$nodeList = $this->getNode();
if($nodeList==null)
foreach($nodeList as $key=>$node)
{
$data[$key] = $node->getSaveData();
}
}
public function getSaveXml($level=0)
{
= str_pad("",
$level, "\t");
$str = "$prefixSpacenodeTag";
$str .= " $key=\"$value\"";
foreach($this->values as $key=>$value){
{
$str .= "$prefixSpace\t
}
else
$str .= "$prefixSpace\t
}
$tmpStr = trim(trim($tmpStr, "\r\n"));
$str .= $node->getSaveXml($level+1)."\r\n";
$str .= "$prefixSpace$this->nodeTag>";
}
{
unset($this->nodes, $this->attributes, $this->values);
?>
*==============================================
*
* @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
*/
{
private $prefixStr = '';
private $nodeLists = array();
{
parent::__construct($nodeTag);
}
{
$seq = sizeof($this->nodeLists);
$tmpObject = new SimpleDocumentNode($this,
$pNodeId, $name, $seq);
$tmpObject->setAttributes($attributes);
return $tmpObject;
}
{
if(sizeof($this->nodeLists)==1)
$this->nodeLists = array();
else
unset($this->nodeLists[$id]);
}
{
return $this->nodeLists[$id];
}
{
return $this->createNodeByName($this, $name, $attributes, -1);
}
{
return $this->removeNodeByName($this, $name);
}
{
return $this->getNodeByName($this, $name);
}
{
$prefixSpace = "";
$str = $this->prefixStr."\r\n";
return $str.parent::getSaveXml(0);
}
}
?>
*===============================================
*
* @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 $pNodeId = null;
{
parent::__construct($nodeTag);
$this->rootObject = $rootObject;
$this->pNodeId = $pNodeId;
$this->seq = $seq;
}
{
return ($this->pNodeId==-1)?
$this->rootObject:
$this->rootObject->getNodeById($this->pNodeId);
}
return $this->seq;
}
{
return $this->createNodeByName($this->rootObject,
$name, $attributes,
$this->getSeq());
}
{
return $this->removeNodeByName($this->rootObject, $name);
}
public function getNode($name=null)
{
return $this->getNodeByName($this->rootObject,
$name);
}
}
?>
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
北京长安街-9999号
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:food11
Array
(
[name] => food11
[price] => 12.90
)
Array
(
[id] => food11
)
商品名:food12
Array
(
[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:food11
Array
(
[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
北京长安街-9999号
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
北京长安街-9999号
下面是通过createNode()函数,添加商品, 然后显示添加后的结果
北京长安街-9999号
99
The following is to delete the product through the removeNode() function, and then display the result after deletion
Beijing Chang'an Street-9999 No.
< ;price>100

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Dreamweaver Mac version
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

WebStorm Mac version
Useful JavaScript development tools