What do page h5 and php mean? (Related knowledge discussion)

HTML5 and PHP are two technologies commonly used in web development. The former is used to build page layout, style and interaction, and the latter is used to handle server-side business logic and data storage. Let’s dive into the relevant knowledge of HTML5 and PHP.

1. What is HTML5?

HTML5 (Hypertext Markup Language 5) is the latest version of the HTML standard, which is mainly used to build the structure and content of Web pages. Compared with previous HTML versions, HTML5 introduces some new features and elements to make web design simpler, more intuitive and more flexible. The following are commonly used elements and attributes in HTML5:

1. Semantic tags: article, section, header, footer, nav, aside, etc. These tags help structure web pages and make it easier for search engines to crawl and index web content.

2. Form elements: new form types and input controls, such as date, time, url, email, color, range, number, etc.

3. Multimedia elements: audio and video tags, which can play and control audio and video.

4. Graphic elements: canvas and svg tags, which are used to draw bitmaps and vector graphics respectively, and support animation and interactive effects.

5. Web page storage: localStorage and sessionStorage tags can store and read web page data locally.

6. New APIs: such as WebRTC, Web Workers, Websockets, etc., can implement more advanced web applications.

2. What is PHP?

PHP (Hypertext Preprocessor) is a server-side based programming language used to handle the interaction between web servers and databases. PHP can be embedded into HTML templates to implement dynamic and interactive web pages. The following are commonly used features of PHP:

1. Variables and arrays: used to store data and information.

2. Functions and classes: used to reuse code and implement object-oriented programming.

3. Database support: You can easily connect and operate MySQL, Oracle, PostgreSQL and other databases.

4. Form processing: It can receive and verify the form data submitted by the user, and respond accordingly.

5. File operations: files can be created, read, modified and deleted.

6. Session and Cookie Management: User authentication and session tracking can be achieved.

3. Combination of HTML5 and PHP

Combining HTML5 and PHP can achieve richer and more dynamic web applications, such as:

1. Data rendering : PHP can read data from the database and then render it on the web page using HTML5 semantic tags and style sheets to achieve data visualization and optimized display.

2. Form submission: HTML5 form elements and PHP form processing can realize the entire process of users submitting data, verifying data and saving data.

3. File upload: HTML5 file control and PHP file operation can realize functions such as uploading files on web pages, verifying file type and size, and saving files to the server.

4. Dynamic interaction: The response mechanism of HTML5's Ajax and PHP can realize functions such as asynchronous loading, data interaction and interactive effects.

In short, HTML5 and PHP are two indispensable web development technologies, and their combination will better promote the development and innovation of web technology. If you want to learn these technologies, you can refer to relevant books, video tutorials and online courses to master their core features and application methods to become an excellent web developer.

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