search
HomeBackend DevelopmentXML/RSS TutorialDo you know XML? What is it used for?

What is

?

XML, Extensible Markup Language, extensible markup language. The suffix of the file is: .xml. Just like HTML is for displaying data, XML is for transmitting and storing data.

It is said that java is a professional language for operating XML.

What is it used for?

In order to facilitate data sharing and communication between different applications and different platforms.

Do you know XML? What is it used for?

The specific functions are:

(1) It can be used as a simple database to store and retrieve data;

( 2) Transmit files in the agreed format;

(3) Make software configuration files. [Configuration file: a file that saves software settings]

XML’s older brother——HTML

Do you know XML? What is it used for?

XML was born to improve the flaws and limitations of HTML.

The differences in usage are as follows:

Do you know XML? What is it used for?

XML’s best friend——JSON

JSON, Javascript Object Notation, js object notation. The function is also to store and exchange text information.

Comparison of the two: JSON is smaller, faster, easier to parse, so, and more popular than XML.

The scope of both: JSON is suitable for simple value transfer, and XML is suitable for a wider range.

XML data structure - tree structure

Do you know XML? What is it used for?

How it is implemented specifically, readers can refer to the code in the example below to understand at a glance.

It is worth noting that just like a book has only one root, XML can only have one root element.

Mind Map

Do you know XML? What is it used for?

##ExampleCode in the

.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<email xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="email.xsd">
<to>liuwei8809@163.com</to>
<form>hellokitty@163.com</form>
<title>about loving</title>
<body>I love you forever!</body>
<date>2008-11-12</date>
</email>

Code in the .xsd file:

<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:element name="email">
        <xs:complexType>
          <xs:sequence>
			<xs:element name="to" type="xs:string"></xs:element>
			<xs:element name="from" type="xs:string"></xs:element>
			<xs:element name="title" type="xs:string"></xs:element>
			<xs:element name="body" type="xs:string"></xs:element>
			<xs:element name="date" type="xs:date"></xs:element>
         </xs:sequence>
       </xs:complexType>
   </xs:element>
</schema>

Achieved effect:

Do you know XML? What is it used for?

For more related questions, please visit the PHP Chinese website: XML Video Tutorial

The above is the detailed content of Do you know XML? What is it used for?. For more information, please follow other related articles on the PHP Chinese website!

Statement
This article is reproduced at:CSDN. If there is any infringement, please contact admin@php.cn delete
RSS in XML: Unveiling the Core of Content SyndicationRSS in XML: Unveiling the Core of Content SyndicationApr 22, 2025 am 12:08 AM

The implementation of RSS in XML is to organize content through a structured XML format. 1) RSS uses XML as the data exchange format, including elements such as channel information and project list. 2) When generating RSS files, content must be organized according to specifications and published to the server for subscription. 3) RSS files can be subscribed through a reader or plug-in to automatically update the content.

Beyond the Basics: Advanced RSS Document FeaturesBeyond the Basics: Advanced RSS Document FeaturesApr 21, 2025 am 12:03 AM

Advanced features of RSS include content namespaces, extension modules, and conditional subscriptions. 1) Content namespace extends RSS functionality, 2) Extended modules such as DublinCore or iTunes to add metadata, 3) Conditional subscription filters entries based on specific conditions. These functions are implemented by adding XML elements and attributes to improve information acquisition efficiency.

The XML Backbone: How RSS Feeds are StructuredThe XML Backbone: How RSS Feeds are StructuredApr 20, 2025 am 12:02 AM

RSSfeedsuseXMLtostructurecontentupdates.1)XMLprovidesahierarchicalstructurefordata.2)Theelementdefinesthefeed'sidentityandcontainselements.3)elementsrepresentindividualcontentpieces.4)RSSisextensible,allowingcustomelements.5)Bestpracticesincludeusing

RSS & XML: Understanding the Dynamic Duo of Web ContentRSS & XML: Understanding the Dynamic Duo of Web ContentApr 19, 2025 am 12:03 AM

RSS and XML are tools for web content management. RSS is used to publish and subscribe to content, and XML is used to store and transfer data. They work with content publishing, subscriptions, and update push. Examples of usage include RSS publishing blog posts and XML storing book information.

RSS Documents: The Foundation of Web SyndicationRSS Documents: The Foundation of Web SyndicationApr 18, 2025 am 12:04 AM

RSS documents are XML-based structured files used to publish and subscribe to frequently updated content. Its main functions include: 1) automated content updates, 2) content aggregation, and 3) improving browsing efficiency. Through RSSfeed, users can subscribe and get the latest information from different sources in a timely manner.

Decoding RSS: The XML Structure of Content FeedsDecoding RSS: The XML Structure of Content FeedsApr 17, 2025 am 12:09 AM

The XML structure of RSS includes: 1. XML declaration and RSS version, 2. Channel (Channel), 3. Item. These parts form the basis of RSS files, allowing users to obtain and process content information by parsing XML data.

How to Parse and Utilize XML-Based RSS FeedsHow to Parse and Utilize XML-Based RSS FeedsApr 16, 2025 am 12:05 AM

RSSfeedsuseXMLtosyndicatecontent;parsingtheminvolvesloadingXML,navigatingitsstructure,andextractingdata.Applicationsincludebuildingnewsaggregatorsandtrackingpodcastepisodes.

RSS Documents: How They Deliver Your Favorite ContentRSS Documents: How They Deliver Your Favorite ContentApr 15, 2025 am 12:01 AM

RSS documents work by publishing content updates through XML files, and users subscribe and receive notifications through RSS readers. 1. Content publisher creates and updates RSS documents. 2. The RSS reader regularly accesses and parses XML files. 3. Users browse and read updated content. Example of usage: Subscribe to TechCrunch's RSS feed, just copy the link to the RSS reader.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

Atom editor mac version download

Atom editor mac version download

The most popular open source editor