About programmer technology experts
Those who are popular are generally not experts. Because if you want to be popular, you need time to market it. Marketing capabilities and technical capabilities are orthogonal. If a person spends a lot of time on marketing, it will be difficult to spend time on technical improvement. Don't think that he is a master just because he talks about a field that you don't understand. A person living in the desert will be very excited when he hears the description of anyone who has seen the sea. But if someone tells him that a camel has six Just a foot, he would definitely sneer at it. Daniel will speak in great detail about areas he is familiar with, and will also ask the right questions about areas he is unfamiliar with.
About learning new knowledge about programming
Learning a new skill best requires in-depth understanding. But in today's era when various frameworks and various class libraries require contact. It is difficult to truly understand all libraries. Suppose you are learning python. If you really understand the print statement, you need to know python's syntax parser, C language calls, and then the IO system. This is not possible for most people, most people rely on memory. On the other hand, if you need to make socket requests when learning Python, and you are familiar with Java's socket implementation, you will quickly learn how to use Python's sockets. To sum up, there are two ways to quickly learn new knowledge. One is to have a strong memory, and the other is to have a deep understanding of basic knowledge.
About attention
If you are doing mechanical things, just rely on human inertia. If you are doing creative work, you need a lot of concentration. Attention is a consumable product. If you dwell on a problem for too long, your attention will be reduced, resulting in low efficiency and making mistakes more likely. You can rest at this time. Let your mind cool down. Improving concentration allows you to do more in a short amount of time, giving you time to live and not just work.
About feedback
In technical exchanges, if others don’t oppose you, it doesn’t mean they agree with you. Maybe they are too lazy to share their knowledge with you. If you are wrong, others may not necessarily tell you, but they may be embarrassed to attack you. Therefore, it is important to obtain other people's true thoughts.
About reflection
You should always ask yourself what the meaning of doing the current thing is. What's the point of doing this now? There are two advantages to doing this. First, you are more willing to do it after you understand the meaning. The second is if the error can be discovered in time and then corrected.
About the overall view
To solve a problem, you should first figure out what resources you have, what solutions you have, and estimate the time for various solutions. Instead of immediately implementing the first method that comes to mind. Just like the relationship between breadth search and depth search. If you only use one method, the efficiency may be very slow. If your initial intuition is wrong, it will take you further and further away from the solution. M Free to receive LAMP brothers even original PHP tutorial CD/"Speaking PHP" refined version, details consultation official website customer service: http://www.lampBrother.net
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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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