


Learning Experience Speech Dedicated to PHP Beginners' Introductory Learning Experience
1. Summary: To learn any language, you need to read more, think more, write more, and ask more questions! ! Writing programming is something that practice makes perfect! Because there is only so much knowledge, and if you read too much, you will think that everything is the same.
Programmers just do the same thing over and over again. After typing the code a few times, you can write it with your eyes closed, so corporate recruitment will ask you how many lines of code you have written! ! Programmers are most afraid of being impetuous. Sometimes they find that no errors can be found in a program, just because there is one missing or extra symbol. What programmers need is carefulness. Careless people cannot be programmers!
2. You must be familiar with the php reference manual. Some beginners will ask some very basic questions. In fact, they are all in the manual, so it is recommended that beginners read the manual first, and it is best to copy the commonly used functions several times! ! Type the code in the manual a few more times.
When you are familiar with everything in the manual, the possibility of you encountering problems is very small. Of course, you have to read the mysql manual, but you don’t have to read it in detail first! At least you must know the commonly used SQL statements, this is a must!
3. I think the best thing about PHP is that there are many open source projects that can be found online, and some of them are big projects. Therefore, it is recommended that beginners read the message board code to familiarize themselves with commonly used data operations. Then they can look at simple corporate websites or blogs, and then they can study ecshop and the like. When you understand these, you can look at discuz. , the phpwind forum source code, the structure inside is quite powerful, of course this is not what beginners need to do, but there must always be an ideal to be a general!
4. Get used to it and solve problems yourself first. In the Internet age, it is necessary to learn to use Baidu and Google. When you really can't solve it, ask for help from others! !
5. When you finish writing a program, you must learn to share it. Because you are a beginner, your program may have many imperfections, so it is more beneficial to you to share the program you wrote! ! Share more and communicate more! This will make the programs you write more precise! !
6. Remember, after learning PHP, you not only need to learn PHP, you also need to learn to analyze the implementation of a project or the implementation of a program. It is said that algorithms are the basis of language. To learn PHP well, you have to learn and use algorithms to implement your programs. Learning to use algorithms can be used in any language. To learn to use PHP, you can only use PHP.
The above introduces the learning experience speech. It is dedicated to PHP beginners’ introductory learning experience. It includes the content of the learning experience speech. I hope it will be helpful to friends who are interested in PHP tutorials.

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.


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