Article Introduction：The meaning of mysql master-slave synchronization is backup. The master library (Master) synchronizes the writes in its own library to its slave library (Slave). When some unpredictable conditions occur in the master library and the entire server cannot be used, due to There is also a copy of the data in the slave database, so the data can be restored quickly without causing or reducing data loss.

2020-10-05 comment 0  5343

Article Introduction：: PHP reads the table structure and automatically generates PHP classes: When writing projects, we often encounter operating databases. The most troublesome thing every time we operate the database is to write a table mapping class. I wrote an automatically generated class based on the rules. Small demo: <?php// Database configuration parameters $db_config = array('host' => '127.0.0.1','port' => 3306,'username' => 'root','password' => '' ,'dbname' =

2016-07-28 comment 0  1156

Article Introduction：1. Production continuous date description: Mainly used for some statistical data to display according to chronological order; if the database data has data for every other day, but the statistics need to be displayed every day, even if it is 0, then a timetable must be generated. To use; query database data: SELECTDATE_FORMAT(create_time,'%Y-%m-%d')ASdate,COUNT(1)ASnumbFROMqc_taskWHEREcreate_time>=DATE_SUB(CURDATE(),INTERVAL1MONTH)anddepartment_id

2023-06-02 comment 0  1555

Article Introduction：This article will be based on reality, use PHP to read the data in the Mysql data table, and output the obtained data to the front-end JS as required, and then call the Highcharts chart library through configuration to generate a pie chart.

2016-05-16 comment 0  1819

Article Introduction：There are two types of staticization in PHP, namely: 1. Pure staticization. Pure staticization is divided into partial staticization and complete staticization. Pure staticization is to save the dynamic page generated by PHP as a static html page; 2. Pseudo-static, pseudo-static or dynamic access, in essence, dynamically generated data to facilitate search engine inclusion.

2022-03-09 comment 0  2224

Article Introduction：When I was browsing GitHub today, I found a very awesome library - Faker. This library can generate some false information, including personal information or some test data. If we need to use some fake data for testing during development, then this Library comes in handy~

2023-08-10 comment 0  1116

Article Introduction：How to use PHP to implement data visualization and chart generation Data visualization and chart generation play an important role in modern data analysis and presentation. As a popular server-side scripting language, PHP provides a wealth of tools and libraries for data visualization and chart generation. This article will introduce how to use PHP to achieve this function, and provide code examples. Before we begin, we need to install a library for generating charts. Chart.js is a powerful and easy-to-use JavaScript

2023-09-05 comment 0  1356

Article Introduction：In-depth understanding of the random number generator in NumPy Introduction: NumPy (NumericalPython) is one of the important scientific computing libraries in Python, providing a large number of numerical operations and matrix operation functions. Among them, random number generation is an important part of the NumPy library. It provides powerful support for simulations, experiments, and data analysis in scientific computing, and can help us generate random numbers that obey various distributions. This article will provide an in-depth understanding of the random number generator in the NumPy library and provide

2024-01-03 comment 0  532

Article Introduction：thinkphp's u method is used to complete the assembly of URL addresses. Its feature is that it can automatically generate the corresponding URL address based on the current URL mode and settings. Its usage syntax is "U('address','parameter','pseudo-static', 'Whether to jump', 'Show domain name');".

2021-12-16 comment 0  2379

Article Introduction：The PHP U method is used to assemble the URL address. It is characterized by automatically generating the corresponding URL address based on the current URL mode and settings. Its syntax format is "U('address','parameter','pseudo-static',' Whether to jump','display domain name');".

2020-07-03 comment 0  2736

Article Introduction：CakePHP is a popular PHP framework that is widely recognized for building web applications. Using the Faker tool in CakePHP allows us to generate random data more easily, thus simplifying development and testing work. This article will introduce how to use Faker in CakePHP applications. 1. What is Faker? Faker is a PHP library for generating pseudo-random data. We can use this to simulate some data of a random nature, such as usernames, addresses, emails

2023-06-03 comment 0  1095

Article Introduction：Before learning big data technology, understand the characteristics and application scenarios of MySQL and Oracle. Introduction With the advent of the big data era, big data technology has gradually become the focus of various industries. In the big data technology ecosystem, databases play a very important role. Among databases, MySQL and Oracle are two very well-known relational databases with a wide range of application scenarios and features. This article will introduce the characteristics and application scenarios of MySQL and Oracle respectively, and provide some code examples. 1. MySQ

2023-09-09 comment 0  1345

Article Introduction：To ensure the security of PHP session management, the following security policies must be implemented: Use secure cookies (HTTPS transport, with HttpOnly and Secure flags) Set up reasonable session lifecycle Use session regeneration Prevent session hijacking Ban Cross-site request forgery (CSRF), For example using an anti-CSRF token to store session data using a database instead of file storage

2024-05-02 comment 0  1178

Article Introduction：On November 1, 2023, Alibaba Cloud Yaochi Database announced at the Hangzhou Yunqi Conference that it has fully realized serverless and has successfully accessed large model capabilities such as Tongyi, significantly improving the one-stop and intelligent level of the database. At the same time, the PolarDB AlwaysOn series also launched three major upgrades, and the first data intelligent assistant DMSCopilot also made a stunning debut. Li Feifei, head of Alibaba Cloud's database product division, said at the meeting: "Driven by Serverless and AI, cloud native databases are accelerating their evolution into a one-stop intelligent data platform." Li Feifei said that the data platform should be like "building blocks." Just as convenient and easy to use, and using Serverless technology to achieve

2023-11-01 comment 0  1286

Article Introduction：Two Python class libraries are needed to generate Chinese word clouds in Python: jieba: Chinese word segmentation tool, wordcloud: word cloud generation tool under Python. Then set the parameters in the code according to your own needs. The isCN parameter can cancel Chinese word segmentation.

2019-06-11 comment 0  7195

Article Introduction：With the rapid development of the Internet and mobile Internet, the explosive growth of data volume has become a norm. How to quickly analyze large amounts of data to obtain valuable information has become an urgent need for businesses and individuals. In this regard, MySql's analytical database came into being. This article will introduce how to use MySQL to implement big data analysis. 1. What is an analytical database? Traditional databases in the past were mainly based on transaction processing, that is, operations such as modification, addition, deletion, and query of a certain row of records. If the size of the database

2023-06-16 comment 0  1851

Article Introduction：Matplotlib is a Python 2D plotting library that produces publication-quality graphics in a variety of hardcopy formats and interactive environments on a variety of platforms. We can use it to graph the data and draw it into various patterns to analyze the data intuitively.

2019-06-04 comment 0  4762

Article Introduction：With the rapid development of the Internet, data analysis and visualization have become essential means for companies and individuals to analyze data on websites and applications. As a popular server-side scripting language, PHP has become the first choice of many web developers. In this article, we will discuss how to read data from a database and generate a chart display using PHP. 1. PHP connects to the database. Before generating charts, we need to connect to the database and obtain the required data. PHP supports a variety of databases, including MySQL, PostgreSQL and SQLit

2023-04-21 comment 0  1577

Article Introduction：There are often some very long links in the development process of WeChat public accounts. If you generate a QR code at this time, it will cause the recognition process to be slow during the scanning process. If it is stored in the database, the field length of the database will need to be set. Very long will do, so it is increasingly important to convert long links into short links.

2018-05-26 comment 1  10153

Article Introduction：PHP is a server-side scripting language that is popular for website development and dynamic web page generation. In PHP, modifying data is a very important operation. This article will introduce how to use PHP to modify data. 1. Connect to the database Use the mysql_connect() function in PHP to connect to the database. This function requires a connection based on parameters such as the IP address, username, and password of the database server. After the connection is successful, use the mysql_select_db() function to select the database. 2. Query data

2023-04-03 comment 0  1373