Outline:
Introduction
1. Terms related to XML documents
2. Terms related to DTD
Introduction
The most troublesome thing for beginners to learn XML is that there are a lot of new terminology concepts. understand. Since XML itself is also a brand-new technology, it is constantly developing and changing. Organizations and major network companies (Microsoft, IBM, SUN, etc.) are constantly introducing their own insights and standards, so it is not surprising that new concepts are flying everywhere. . There is no authoritative institution or organization in China to officially name these terms. Most of the Chinese textbooks you see about XML are translated based on the author's own understanding. Some are correct and some are wrong, which further hinders the development of XML. Our understanding and learning of these concepts.
The explanation of XML terms you will see below is also the author’s own understanding and translation. Ajie is based on the XML1.0 standard specification released by the W3C organization and related official documentation. It can be ensured that these understandings are basically correct, at least not wrong. If you want to read and understand further, I have listed the sources and links to relevant resources at the end of this article, which you can access directly. Okay, let’s get to the point:
1. Terms related to XML documents
What is an XML document? You know the HTML source code file? An XML document is an XML source code file written with XML tags. XML documents are also ASCII plain text files that you can create and modify using Notepad. The suffix name of XML documents is .XML, for example, myfile.xml. You can also directly open the .xml file using IE5.0 or above browsers, but what you see is the "XML original code" and the page content will not be displayed. You can try saving the following code as myfile.xml:
XML Easy Learning Manual< ;/title> <br><br><author>ajie</author> <br><br><email>ajie@aolhoo.com</email> <br><br><date>20010115</date> <br><br></myfile&g t; <br/><br/> <br/>XML document contains three parts: <br/><br/>1. An XML document declaration; <br/><br/>2. A definition of the document type; <br/><br/>3. Content created with XML tags. <br/><br/><br/>Example: <br/><br/><?xml version="1.0"?> <br><br><!DOCTYPE filelist SYSTEM "filelist.dtd"> <br><br><br><filelist> <br><br><myfile> <br> <br> QUICK START OF XML The line <?xml version="1.0"?> is the declaration of an XML document. The second line indicates that this document uses filelist.dtd to define the document type. The following line is the main part of the content. <br>Let’s learn about the relevant terms in XML documents: <br><br><br>1.Element (element): <br><br>We already know something about elements in HTML. It is the smallest unit that makes up an HTML document, and it is the same in XML. An element is defined by a tag, including the start and end tags and the content inside, like this: <author>ajie</author> <br><br><br>The only difference is: in HTML, the tag is fixed, while in In XML, tags need to be created yourself. <br><br><br>2.Tag (logo) <br><br>Tag is used to define elements. In XML, tags must appear in pairs, surrounding the data. The name of the identifier is the same as the name of the element. For example, such an element: <br><br><author>ajie</author> <br><br>where <author> is the identifier. <br><br><br>3.Attribute: <br><br>What is an attribute? Look at this HTML code:<font color="red">word</font>. Among them, color is one of the attributes of font. <br><br>Attributes are further descriptions and explanations of the logo. A logo can have multiple attributes, such as the font attribute and size. Attributes in XML are the same as attributes in HTML. Each attribute has its own name and value. The attribute is part of the identifier. Example: <br><br><author sex="female">ajie</author> <br><br>Attributes in XML are also defined by yourself. We recommend that you try not to use attributes and change attributes into sub-elements. For example, the above code can Change it to this: <br><br><author>ajie <br><br><sex>female</sex> <br><br></author> <br><br>The reason is that attributes are not easy to expand and be manipulated by programs. <br><br><br>4.Declaration <br><br>In the first line of all XML documents there is an XML declaration. This declaration indicates that this document is an XML document and which XML version specification it follows. An XML declaration statement looks like this: <br><br><?xml version="1.0"?> <br><br><br>5.DTD (Document Type Definition) <br><br>DTD is used to define elements, attributes and elements in XML documents relationship between. <br><br>You can check whether the structure of the XML document is correct through the DTD file. But creating an XML document does not necessarily require a DTD file. Detailed descriptions of DTD files will be listed separately below. <br><br><br>6.Well-formed XML (well-formed XML) <br><br>A document that abides by XML syntax rules and adheres to XML specifications is called "well-formed". If all your markup strictly adheres to the XML specification, then your XML document does not necessarily need a DTD file to define it. <br><br>A well-formed document must start with an XML declaration, for example: <br><br><?xml version="1.0" standalone="yes" encoding="UTF-8"?> <br><br>where you must state that the document adheres to The XML version is currently 1.0; secondly, it indicates that the document is "independent", and it does not require a DTD file to verify whether the identification in it is valid; thirdly, it is necessary to indicate the language encoding used in the document. The default is UTF-8. If you use Chinese, you need to set it to GB2312. <br><br>A well-formatted XML document must have a root element, which is the first element created immediately after the declaration. Other elements are child elements of this root element and belong to a group of root elements. <br><br>The content of a well-formed XML document must comply with XML syntax when written. (We will explain XML syntax in detail in the next chapter) <br><br><br>7. Valid XML (valid XML) <br><br>An XML document that abides by XML syntax rules and complies with the corresponding DTD file specifications is called a valid XML document. Note that we compare "Well-formed XML" and "Valid <br>XML". The biggest difference between them is that one fully complies with the XML specification and the other has its own "Document Type Definition (DTD)". <br><br>The process of comparing and analyzing an XML document with its DTD file to see if it complies with DTD rules is called validation. This process is usually handled by a software called parser. <br><br>A valid XML document must also start with an XML declaration, for example: <br><br><?xml version="1.0" standalone="no" encode="UTF-8"?> <br><br>Different from the above example, In the standalone (independent) attribute, "no" is set here because it must be used with the corresponding DTD. The DTD file is defined as follows: <br><br><!DOCTYPE type-of-doc SYSTEM/PUBLIC "dtd- name"> <br><br>Among them: <br><br>"!DOCTYPE" means you want to define a DOCTYPE; <br><br>"type-of-doc" is the name of the document type, which is defined by you. It is usually the same as the DTD file name; <br> <br>Only use one of the two parameters "SYSTEM/PUBLIC". SYSTEM refers to the URL of the private DTD file used by the document, while PUBLIC refers to the URL of the public DTD file used by the document. <br><br>"dtd-name" is the URL and name of the DTD file. All DTD files have the suffix ".dtd". <br><br>We still use the above example, it should be written like this: <br><br><?xml version="1.0" standalone="no" encode="UTF-8"?> <br><br><!DOCTYPE filelist SYSTEM "filelist. dtd"></p>
<p> The above is the content of XML terminology. For more related content, please pay attention to the PHP Chinese website (www.php.cn)! <br></p>
<p> </p>
<p><br></p>
<p><br></p> </div>
</div>
<div style="display: flex;">
<div class="wzconBq" style="display: inline-flex;">
<span>Related labels：</span>
<div class="wzcbqd">
<a onclick="hits_log(2,'www',this);" href-data="https://www.php.cn/search?word=xml" target="_blank">xml</a> </div>
</div>
<!-- <div style="display: inline-flex;float: right; color:#333333;">source：php.cn</div>
-->
</div>
<div class="wzconOtherwz">
<a href="https://www.php.cn/faq/346237.html" title="XML easy learning general section">
<span>Previous article：XML easy learning general section</span>
</a>
<a href="https://www.php.cn/faq/346324.html" title="Java socket programming (Part 2)(1)">
<span>Next article：Java socket programming (Part 2)(1)</span>
</a>
</div>
<div class="wzconShengming">
<div class="bzsmdiv">Statement of this Website</div>
<div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn</div>
</div>
<ins class="adsbygoogle"
style="display:block"
data-ad-format="autorelaxed"
data-ad-client="ca-pub-5902227090019525"
data-ad-slot="2507867629"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
<div class="wzconZzwz">
<div class="wzconZzwztitle">Latest Articles by Author</div>
<ul>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/377601.html">Video material on building your own PHP framework from scratch</a>
</div>
<div>2023-03-15 16:54:01</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/377137.html">Example analysis of how PHPMailer uses QQ mailbox to complete the email sending function</a>
</div>
<div>2023-03-15 12:26:02</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/376186.html">Introduction to how to receive emails in IMAP in php</a>
</div>
<div>2023-03-14 18:58:01</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/375194.html">Example of how to quickly implement array deduplication in PHP</a>
</div>
<div>2023-03-14 11:30:01</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/369412.html">Summary of the use of all attributes of the <a> tag in html</a>
</div>
<div>1970-01-01 08:00:00</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/379971.html">Summary of basic knowledge of PHP (necessary for beginners to get started)</a>
</div>
<div>2023-03-16 15:20:01</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/381607.html">Introduction to the use of typeof in JavaScript</a>
</div>
<div>1970-01-01 08:00:00</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/382066.html">Introduction to the use of confirm() method in JavaScript</a>
</div>
<div>1970-01-01 08:00:00</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/357705.html">A detailed introduction to the HTML5 Placeholder attribute</a>
</div>
<div>1970-01-01 08:00:00</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/380149.html">How to implement single-select, multiple-select and reverse-select in forms in ReactJS</a>
</div>
<div>1970-01-01 08:00:00</div>
</li>
</ul>
</div>
<div class="wzconZzwz">
<div class="wzconZzwztitle">Latest Issues</div>
<ul>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/1796776920.html">How Do I Stay Up-to-Date with the Latest XML and RSS Standards?</a>
</div>
<div>2025-03-10 17:51:05</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/1796776919.html">How Do I Use XML for Data Interoperability in Healthcare/Finance/etc.?</a>
</div>
<div>2025-03-10 17:50:43</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/1796776918.html">How Can I Integrate XML and Semantic Web Technologies?</a>
</div>
<div>2025-03-10 17:50:15</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/1796776917.html">How Do I Use XML for Metadata Management in Digital Libraries?</a>
</div>
<div>2025-03-10 17:49:06</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots"></span>
<a target="_blank" href="https://www.php.cn/faq/1796776916.html">How Can I Create a Custom XML Vocabulary for My Domain?</a>
</div>
<div>2025-03-10 17:48:42</div>
</li>
</ul>
</div>
<div class="wzconZt" >
<div class="wzczt-title">
<div>Related Topics</div>
<a href="https://www.php.cn/faq/zt" target="_blank">More>
</a>
</div>
<div class="wzcttlist">
<ul>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/pdfzmzhcxmlgs"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072212153267141.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="How to convert pdf to xml format" /> </a>
<a target="_blank" href="https://www.php.cn/faq/pdfzmzhcxmlgs" class="title-a-spanl" title="How to convert pdf to xml format"><span>How to convert pdf to xml format</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/kdrjfwq"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072213562155602.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="How to connect broadband to server" /> </a>
<a target="_blank" href="https://www.php.cn/faq/kdrjfwq" class="title-a-spanl" title="How to connect broadband to server"><span>How to connect broadband to server</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/jspxnkjzmpz"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072213493813349.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="How to configure jsp virtual space" /> </a>
<a target="_blank" href="https://www.php.cn/faq/jspxnkjzmpz" class="title-a-spanl" title="How to configure jsp virtual space"><span>How to configure jsp virtual space</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/wjdlxsb"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072214175354987.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="What types of files can be identified based on" /> </a>
<a target="_blank" href="https://www.php.cn/faq/wjdlxsb" class="title-a-spanl" title="What types of files can be identified based on"><span>What types of files can be identified based on</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/dnkdfymzmcl"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072212163956552.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="How to deal with slow computer lag and slow response" /> </a>
<a target="_blank" href="https://www.php.cn/faq/dnkdfymzmcl" class="title-a-spanl" title="How to deal with slow computer lag and slow response"><span>How to deal with slow computer lag and slow response</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/appquanc"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072214174642850.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="app full name" /> </a>
<a target="_blank" href="https://www.php.cn/faq/appquanc" class="title-a-spanl" title="app full name"><span>app full name</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/visiblessm"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072214213114211.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="visible means" /> </a>
<a target="_blank" href="https://www.php.cn/faq/visiblessm" class="title-a-spanl" title="visible means"><span>visible means</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/dnyycxfsycunk"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072212244638004.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="Solutions to unknown software exception exceptions in computer applications" /> </a>
<a target="_blank" href="https://www.php.cn/faq/dnyycxfsycunk" class="title-a-spanl" title="Solutions to unknown software exception exceptions in computer applications"><span>Solutions to unknown software exception exceptions in computer applications</span> </a>
</li>
<li class="ul-li">
<a target="_blank" href="https://www.php.cn/faq/cyytypedef"><img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/subject/202407/22/2024072214041871016.jpg?x-oss-process=image/resize,m_fill,h_145,w_220" alt="Usage of typedef in c language" /> </a>
<a target="_blank" href="https://www.php.cn/faq/cyytypedef" class="title-a-spanl" title="Usage of typedef in c language"><span>Usage of typedef in c language</span> </a>
</li>
</ul>
</div>
</div>
</div>
</div>
<div class="phpwzright">
<ins class="adsbygoogle"
style="display:block"
data-ad-client="ca-pub-5902227090019525"
data-ad-slot="3653428331"
data-ad-format="auto"
data-full-width-responsive="true"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
<div class="wzrOne">
<div class="wzroTitle">Popular Recommendations</div>
<div class="wzroList">
<ul>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots wzrolr"></span>
<a style="height: auto;" title="What format is xml?" href="https://www.php.cn/faq/479745.html">What format is xml?</a>
</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots wzrolr"></span>
<a style="height: auto;" title="What software do you use to open xml files?" href="https://www.php.cn/faq/423189.html">What software do you use to open xml files?</a>
</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots wzrolr"></span>
<a style="height: auto;" title="What is XML and what does it do?" href="https://www.php.cn/faq/417105.html">What is XML and what does it do?</a>
</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots wzrolr"></span>
<a style="height: auto;" title="What are the four common parsing methods in xml?" href="https://www.php.cn/faq/416849.html">What are the four common parsing methods in xml?</a>
</div>
</li>
<li>
<div class="wzczzwzli">
<span class="layui-badge-dots wzrolr"></span>
<a style="height: auto;" title="What are the ways to parse XML in Java?" href="https://www.php.cn/faq/417232.html">What are the ways to parse XML in Java?</a>
</div>
</li>
</ul>
</div>
</div>
<script src="https://sw.php.cn/hezuo/cac1399ab368127f9b113b14eb3316d0.js" type="text/javascript"></script>
<div class="wzrThree">
<div class="wzrthree-title">
<div>Popular Tutorials</div>
<a target="_blank" href="https://www.php.cn/course.html">More>
</a>
</div>
<div class="wzrthreelist swiper2">
<div class="wzrthreeTab swiper-wrapper">
<div class="check tabdiv swiper-slide" data-id="one">Related Tutorials <div></div></div>
<div class="tabdiv swiper-slide" data-id="two">Popular Recommendations<div></div></div>
<div class="tabdiv swiper-slide" data-id="three">Latest courses<div></div></div>
</div>
<ul class="one">
<li>
<a target="_blank" href="https://www.php.cn/course/812.html" title="The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/041/620debc3eab3f377.jpg" alt="The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)" href="https://www.php.cn/course/812.html">The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)</a>
<div class="wzrthreerb">
<div>1438640 <b class="kclbcollectb"></b></div>
<div class="courseICollection" data-id="812">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/74.html" title="PHP introductory tutorial one: Learn PHP in one week" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/068/6253d1e28ef5c345.png" alt="PHP introductory tutorial one: Learn PHP in one week"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="PHP introductory tutorial one: Learn PHP in one week" href="https://www.php.cn/course/74.html">PHP introductory tutorial one: Learn PHP in one week</a>
<div class="wzrthreerb">
<div>4299564 <b class="kclbcollectb"></b></div>
<div class="courseICollection" data-id="74">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/286.html" title="JAVA Beginner's Video Tutorial" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/068/62590a2bacfd9379.png" alt="JAVA Beginner's Video Tutorial"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="JAVA Beginner's Video Tutorial" href="https://www.php.cn/course/286.html">JAVA Beginner's Video Tutorial</a>
<div class="wzrthreerb">
<div>2676836 <b class="kclbcollectb"></b></div>
<div class="courseICollection" data-id="286">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/504.html" title="Little Turtle's zero-based introduction to learning Python video tutorial" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/068/62590a67ce3a6655.png" alt="Little Turtle's zero-based introduction to learning Python video tutorial"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="Little Turtle's zero-based introduction to learning Python video tutorial" href="https://www.php.cn/course/504.html">Little Turtle's zero-based introduction to learning Python video tutorial</a>
<div class="wzrthreerb">
<div>517620 <b class="kclbcollectb"></b></div>
<div class="courseICollection" data-id="504">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/2.html" title="PHP zero-based introductory tutorial" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/068/6253de27bc161468.png" alt="PHP zero-based introductory tutorial"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="PHP zero-based introductory tutorial" href="https://www.php.cn/course/2.html">PHP zero-based introductory tutorial</a>
<div class="wzrthreerb">
<div>878847 <b class="kclbcollectb"></b></div>
<div class="courseICollection" data-id="2">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
</ul>
<ul class="two" style="display: none;">
<li>
<a target="_blank" href="https://www.php.cn/course/812.html" title="The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/041/620debc3eab3f377.jpg" alt="The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)" href="https://www.php.cn/course/812.html">The latest ThinkPHP 5.1 world premiere video tutorial (60 days to become a PHP expert online training course)</a>
<div class="wzrthreerb">
<div >1438640 times of learning</div>
<div class="courseICollection" data-id="812">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/286.html" title="JAVA Beginner's Video Tutorial" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/068/62590a2bacfd9379.png" alt="JAVA Beginner's Video Tutorial"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="JAVA Beginner's Video Tutorial" href="https://www.php.cn/course/286.html">JAVA Beginner's Video Tutorial</a>
<div class="wzrthreerb">
<div >2676836 times of learning</div>
<div class="courseICollection" data-id="286">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/504.html" title="Little Turtle's zero-based introduction to learning Python video tutorial" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/068/62590a67ce3a6655.png" alt="Little Turtle's zero-based introduction to learning Python video tutorial"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="Little Turtle's zero-based introduction to learning Python video tutorial" href="https://www.php.cn/course/504.html">Little Turtle's zero-based introduction to learning Python video tutorial</a>
<div class="wzrthreerb">
<div >517620 times of learning</div>
<div class="courseICollection" data-id="504">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/901.html" title="Quick introduction to web front-end development" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/067/64be28a53a4f6310.png" alt="Quick introduction to web front-end development"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="Quick introduction to web front-end development" href="https://www.php.cn/course/901.html">Quick introduction to web front-end development</a>
<div class="wzrthreerb">
<div >217215 times of learning</div>
<div class="courseICollection" data-id="901">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/234.html" title="Master PS video tutorials from scratch" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/068/62611f57ed0d4840.jpg" alt="Master PS video tutorials from scratch"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="Master PS video tutorials from scratch" href="https://www.php.cn/course/234.html">Master PS video tutorials from scratch</a>
<div class="wzrthreerb">
<div >923746 times of learning</div>
<div class="courseICollection" data-id="234">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
</ul>
<ul class="three" style="display: none;">
<li>
<a target="_blank" href="https://www.php.cn/course/1648.html" title="[Web front-end] Node.js quick start" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png" alt="[Web front-end] Node.js quick start"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="[Web front-end] Node.js quick start" href="https://www.php.cn/course/1648.html">[Web front-end] Node.js quick start</a>
<div class="wzrthreerb">
<div >9917 times of learning</div>
<div class="courseICollection" data-id="1648">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/1647.html" title="Complete collection of foreign web development full-stack courses" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/067/6628cc96e310c937.png" alt="Complete collection of foreign web development full-stack courses"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="Complete collection of foreign web development full-stack courses" href="https://www.php.cn/course/1647.html">Complete collection of foreign web development full-stack courses</a>
<div class="wzrthreerb">
<div >7971 times of learning</div>
<div class="courseICollection" data-id="1647">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/1646.html" title="Go language practical GraphQL" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/067/662221173504a436.png" alt="Go language practical GraphQL"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="Go language practical GraphQL" href="https://www.php.cn/course/1646.html">Go language practical GraphQL</a>
<div class="wzrthreerb">
<div >6786 times of learning</div>
<div class="courseICollection" data-id="1646">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/1645.html" title="550W fan master learns JavaScript from scratch step by step" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/067/662077e163124646.png" alt="550W fan master learns JavaScript from scratch step by step"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="550W fan master learns JavaScript from scratch step by step" href="https://www.php.cn/course/1645.html">550W fan master learns JavaScript from scratch step by step</a>
<div class="wzrthreerb">
<div >846 times of learning</div>
<div class="courseICollection" data-id="1645">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
<li>
<a target="_blank" href="https://www.php.cn/course/1644.html" title="Python master Mosh, a beginner with zero basic knowledge can get started in 6 hours" class="wzrthreelaimg">
<img class="lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/course/000/000/067/6616418ca80b8916.png" alt="Python master Mosh, a beginner with zero basic knowledge can get started in 6 hours"/>
</a>
<div class="wzrthree-right">
<a target="_blank" title="Python master Mosh, a beginner with zero basic knowledge can get started in 6 hours" href="https://www.php.cn/course/1644.html">Python master Mosh, a beginner with zero basic knowledge can get started in 6 hours</a>
<div class="wzrthreerb">
<div >33126 times of learning</div>
<div class="courseICollection" data-id="1644">
<b class="nofollow small-nocollect"></b>
</div>
</div>
</div>
</li>
</ul>
</div>
<script>
var mySwiper = new Swiper('.swiper2', {
autoplay: false,//可选选项，自动滑动
slidesPerView : 'auto',
})
$('.wzrthreeTab>div').click(function(e){
$('.wzrthreeTab>div').removeClass('check')
$(this).addClass('check')
$('.wzrthreelist>ul').css('display','none')
$('.'+e.currentTarget.dataset.id).show()
})
</script>
</div>
<div class="wzrFour">
<div class="wzrfour-title">
<div>Latest Downloads</div>
<a href="https://www.php.cn/xiazai">More>
</a>
</div>
<script>
$(document).ready(function(){
var sjyx_banSwiper = new Swiper(".sjyx_banSwiperwz",{
speed:1000,
autoplay:{
delay:3500,
disableOnInteraction: false,
},
pagination:{
el:'.sjyx_banSwiperwz .swiper-pagination',
clickable :false,
},
loop:true
})
})
</script>
<div class="wzrfourList swiper3">
<div class="wzrfourlTab swiper-wrapper">
<div class="check swiper-slide" data-id="onef">Web Effects <div></div></div>
<div class="swiper-slide" data-id="twof">Website Source Code<div></div></div>
<div class="swiper-slide" data-id="threef">Website Materials<div></div></div>
<div class="swiper-slide" data-id="fourf">Front End Template<div></div></div>
</div>
<ul class="onef">
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="jQuery enterprise message form contact code" href="https://www.php.cn/toolset/js-special-effects/8071">[form button] jQuery enterprise message form contact code</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="HTML5 MP3 music box playback effects" href="https://www.php.cn/toolset/js-special-effects/8070">[Player special effects] HTML5 MP3 music box playback effects</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="HTML5 cool particle animation navigation menu special effects" href="https://www.php.cn/toolset/js-special-effects/8069">[Menu navigation] HTML5 cool particle animation navigation menu special effects</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="jQuery visual form drag and drop editing code" href="https://www.php.cn/toolset/js-special-effects/8068">[form button] jQuery visual form drag and drop editing code</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="VUE.JS imitation Kugou music player code" href="https://www.php.cn/toolset/js-special-effects/8067">[Player special effects] VUE.JS imitation Kugou music player code</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="Classic html5 pushing box game" href="https://www.php.cn/toolset/js-special-effects/8066">[html5 special effects] Classic html5 pushing box game</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="jQuery scrolling to add or reduce image effects" href="https://www.php.cn/toolset/js-special-effects/8065">[Picture special effects] jQuery scrolling to add or reduce image effects</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a target="_blank" title="CSS3 personal album cover hover zoom effect" href="https://www.php.cn/toolset/js-special-effects/8064">[Photo album effects] CSS3 personal album cover hover zoom effect</a>
</div>
</li>
</ul>
<ul class="twof" style="display:none">
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8328" title="Home Decor Cleaning and Repair Service Company Website Template" target="_blank">[Front-end template] Home Decor Cleaning and Repair Service Company Website Template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8327" title="Fresh color personal resume guide page template" target="_blank">[Front-end template] Fresh color personal resume guide page template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8326" title="Designer Creative Job Resume Web Template" target="_blank">[Front-end template] Designer Creative Job Resume Web Template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8325" title="Modern engineering construction company website template" target="_blank">[Front-end template] Modern engineering construction company website template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8324" title="Responsive HTML5 template for educational service institutions" target="_blank">[Front-end template] Responsive HTML5 template for educational service institutions</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8323" title="Online e-book store mall website template" target="_blank">[Front-end template] Online e-book store mall website template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8322" title="IT technology solves Internet company website template" target="_blank">[Front-end template] IT technology solves Internet company website template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8321" title="Purple style foreign exchange trading service website template" target="_blank">[Front-end template] Purple style foreign exchange trading service website template</a>
</div>
</li>
</ul>
<ul class="threef" style="display:none">
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3078" target="_blank" title="Cute summer elements vector material (EPS PNG)">[PNG material] Cute summer elements vector material (EPS PNG)</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3077" target="_blank" title="Four red 2023 graduation badges vector material (AI EPS PNG)">[PNG material] Four red 2023 graduation badges vector material (AI EPS PNG)</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3076" target="_blank" title="Singing bird and cart filled with flowers design spring banner vector material (AI EPS)">[banner picture] Singing bird and cart filled with flowers design spring banner vector material (AI EPS)</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3075" target="_blank" title="Golden graduation cap vector material (EPS PNG)">[PNG material] Golden graduation cap vector material (EPS PNG)</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3074" target="_blank" title="Black and white style mountain icon vector material (EPS PNG)">[PNG material] Black and white style mountain icon vector material (EPS PNG)</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3073" target="_blank" title="Superhero silhouette vector material (EPS PNG) with different color cloaks and different poses">[PNG material] Superhero silhouette vector material (EPS PNG) with different color cloaks and different poses</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3072" target="_blank" title="Flat style Arbor Day banner vector material (AI+EPS)">[banner picture] Flat style Arbor Day banner vector material (AI+EPS)</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-materials/3071" target="_blank" title="Nine comic-style exploding chat bubbles vector material (EPS+PNG)">[PNG material] Nine comic-style exploding chat bubbles vector material (EPS+PNG)</a>
</div>
</li>
</ul>
<ul class="fourf" style="display:none">
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8328" target="_blank" title="Home Decor Cleaning and Repair Service Company Website Template">[Front-end template] Home Decor Cleaning and Repair Service Company Website Template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8327" target="_blank" title="Fresh color personal resume guide page template">[Front-end template] Fresh color personal resume guide page template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8326" target="_blank" title="Designer Creative Job Resume Web Template">[Front-end template] Designer Creative Job Resume Web Template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8325" target="_blank" title="Modern engineering construction company website template">[Front-end template] Modern engineering construction company website template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8324" target="_blank" title="Responsive HTML5 template for educational service institutions">[Front-end template] Responsive HTML5 template for educational service institutions</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8323" target="_blank" title="Online e-book store mall website template">[Front-end template] Online e-book store mall website template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8322" target="_blank" title="IT technology solves Internet company website template">[Front-end template] IT technology solves Internet company website template</a>
</div>
</li>
<li>
<div class="wzrfourli">
<span class="layui-badge-dots wzrflr"></span>
<a href="https://www.php.cn/toolset/website-source-code/8321" target="_blank" title="Purple style foreign exchange trading service website template">[Front-end template] Purple style foreign exchange trading service website template</a>
</div>
</li>
</ul>
</div>
<script>
var mySwiper = new Swiper('.swiper3', {
autoplay: false,//可选选项，自动滑动
slidesPerView : 'auto',
})
$('.wzrfourlTab>div').click(function(e){
$('.wzrfourlTab>div').removeClass('check')
$(this).addClass('check')
$('.wzrfourList>ul').css('display','none')
$('.'+e.currentTarget.dataset.id).show()
})
</script>
</div>
</div>
</div>
<footer>
<div class="footer">
<div class="footertop">
<img src="/static/imghw/logo.png" alt="">
<p>Public welfare online PHP training，Help PHP learners grow quickly！</p>
</div>
<div class="footermid">
<a href="https://www.php.cn/about/us.html">About us</a>
<a href="https://www.php.cn/about/disclaimer.html">Disclaimer</a>
<a href="https://www.php.cn/update/article_0_1.html">Sitemap</a>
</div>
<div class="footerbottom">
<p>
© php.cn All rights reserved
</p>
</div>
</div>
</footer>
<input type="hidden" id="verifycode" value="/captcha.html">
<script>layui.use(['element', 'carousel'], function () {var element = layui.element;$ = layui.jquery;var carousel = layui.carousel;carousel.render({elem: '#test1', width: '100%', height: '330px', arrow: 'always'});$.getScript('/static/js/jquery.lazyload.min.js', function () {$("img").lazyload({placeholder: "/static/images/load.jpg", effect: "fadeIn", threshold: 200, skip_invisible: false});});});</script>
<script src="/static/js/common_new.js"></script>
<script type="text/javascript" src="/static/js/jquery.cookie.js?1742539812"></script>
<script src="https://vdse.bdstatic.com//search-video.v1.min.js"></script>
<link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css?2' type='text/css' media='all'/>
<script type='text/javascript' src='/static/js/viewer.min.js?1'></script>
<script type='text/javascript' src='/static/js/jquery-viewer.min.js'></script>
<script type="text/javascript" src="/static/js/global.min.js?5.5.53"></script>
<!-- Matomo -->
<script>
var _paq = window._paq = window._paq || [];
/* tracker methods like "setCustomDimension" should be called before "trackPageView" */
_paq.push(['trackPageView']);
_paq.push(['enableLinkTracking']);
(function() {
var u="https://tongji.php.cn/";
_paq.push(['setTrackerUrl', u+'matomo.php']);
_paq.push(['setSiteId', '9']);
var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
})();
</script>
<!-- End Matomo Code -->
</body>
</html>
