------Answer-------- The second one has not been done, so pay attention to this issue. Third question: The simplest, you can execute the mysqldump command.
------Answer-------- These problems of yours can be solved using mysql client software. You can use mysql cc or mysql front to realize your requirements. It will be very troublesome to use the program. ------answer-------- It’s okay if you can’t execute it Or google php mysql class adobdlite ------answer-------- good ------answer-------- For 1 and 3, you can use the command line that comes with mysql to complete the import and export work. Assume that the mysql username and password are root xxx and the database is test import sql mysql -hlocalhost -uroot -pxxx test xxx.sql For excel, standard data can be converted into cvs format data and then imported using tools like phpmyadmin. ------answer-------- Two methods: 1. Directly execute the mysql command to let Mysql read the corresponding file 2. Use PHP to read the file and then execute the file content. ------answer-------- 1,3 is very simple 2. Basically there is no perfect solution in the Chinese environment You can use DOM to write a small program for conversion ------answer-------- It's COM =.=|| ------answer-------- The second question is, you can just write a csv file and import it. You can import data into mysql database ------answer-------- The kind of csv that comes out of excel... =_=|| The data is simple and can be used ------answer-------- Support the 1st and 2nd floor 2. For questions, you can consider mysql odbc ------Answer-------- Quote from froole’s reply on the 7th floor: Two methods: 1. Directly execute the Mysql command and let Mysql read the corresponding file 2. Use PHP to read the file and then execute the file content. Concise and clear expression ------answer-------- The points above are so high, sweat. ------answer-------- The second question is this. We need to import some files into the database in batches. Previously, ASP read out the .xls files through asp and wrote them into the database. Now I have switched to PHP, and since I am a complete novice, what I want to do is to directly import the organized .xls files into mysql through PHP. Is this not possible? So is there any good way to implement batch import? For example, you want to import the names and student numbers of all students in a school. ------answer-------- Gingzai777 is trying the expert's method. Does the address behind the source have to be an absolute address? ------Answer-------- Quoting the reply from gingzai777 on the 1st floor: 1. Import the existing SQL file into the database and write a function:
+---------Code---------------+
------Answer--- ----- 1. Import the existing SQL file into the database and write a function:
|

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.

PHP is not dead. 1) The PHP community actively solves performance and security issues, and PHP7.x improves performance. 2) PHP is suitable for modern web development and is widely used in large websites. 3) PHP is easy to learn and the server performs well, but the type system is not as strict as static languages. 4) PHP is still important in the fields of content management and e-commerce, and the ecosystem continues to evolve. 5) Optimize performance through OPcache and APC, and use OOP and design patterns to improve code quality.

PHP and Python have their own advantages and disadvantages, and the choice depends on the project requirements. 1) PHP is suitable for web development, easy to learn, rich community resources, but the syntax is not modern enough, and performance and security need to be paid attention to. 2) Python is suitable for data science and machine learning, with concise syntax and easy to learn, but there are bottlenecks in execution speed and memory management.

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.


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