What are the core knowledge of PHP programming?

What are the core knowledge of PHP programming?

As a programming language widely used in server-side Web development, PHP is undoubtedly one of the skills that Internet developers must master. It is easy to learn, has high development efficiency, and has a vibrant ecosystem, making it a leader in web development. The core knowledge of PHP programming includes both the basic knowledge of the language itself and related skills applied to web development.

1. Basic Grammar

As a programming language, grammar is a basic introductory tutorial. Mastering the basic grammar of PHP is crucial for further in-depth learning and development. Basic syntax to master includes: variable types, loops, conditional statements, arrays, strings, etc.

(1) Variable type

Variable types in PHP include numbers (integer), strings (string), floating point numbers (float), Boolean values ​​(boolean), and arrays (array) etc. Understanding these variable types and their usage is an important foundation for writing efficient, streamlined, and scalable code.

(2) Loops

Loops are widely used in PHP. Mastering the various application scenarios and usage of loops is an essential basic skill.

(3) Conditional statements

Conditional statements are also often used in development. Understanding the usage of statements such as if, else, and switch case can help developers design a more readable code.

(4) Array

Arrays are widely used in PHP. Mastering the definition, value acquisition, assignment, traversal, operation and use of related functions of arrays is a very important programming skill. .

(5) String

Strings in PHP also support a wide range of functions and operations. Familiarizing yourself with these functions and operations will help developers to work more quickly and efficiently. Write code.

2. Object-oriented programming

Object-oriented programming in PHP has become a consensus in the global IT field because it is easier to maintain than traditional process-based programming and can better adapt to business changes. . Mastering the related concepts of object-oriented programming (OOP), including classes, objects, inheritance, encapsulation, polymorphism, etc., is an important way to improve programming efficiency and code readability.

3. Database Operation

The foundation of modern web applications is data storage and management. There are many database extension packages in PHP, such as MySQL, and technologies such as NoSQL and Redis are often used in development. Therefore, it is essential to learn PHP to connect to the database, operate the database, query, insert, update, delete and other data operations. core knowledge.

4. XML, JSON, SOAP

It is necessary to learn the relevant knowledge of XML, JSON, and SOAP in PHP, which can support data formatting, data exchange, data transmission, etc. data processing. Mastering this knowledge can make developers more robust in the data transfer process and able to operate data more efficiently.

5. Web Development

PHP is a language widely used for Web development, so it is also indispensable to understand the relevant knowledge about the Web, including Web server, client, JavaScript , HTML, etc., as well as knowledge related to HTTP protocol, such as Get/Post, Session/Cookie, etc.

6. Security

Security is an issue that must be taken into consideration in Web development. There are many security risks, including SQL injection, XSS attacks, CSRF attacks, etc. PHP developers need to understand these security issues and master solutions to provide a strong guarantee for Web security.

In short, mastering the above core knowledge can help us lay a solid foundation for PHP development and lay a solid foundation for further improving our skills and writing efficient and readable code.

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