Course Introduction：This article explains class and object creation in PHP 7. It details the differences between classes (blueprints) and objects (instances), illustrates object-oriented programming principles (encapsulation, abstraction, inheritance, polymorphism), a
2025-03-10 comment 0 407
Course Introduction：WordPress database interaction guide: mastering wpdb class and database operation skills WordPress comes with a large number of database interaction functions. WP_Query class and wp_insert_post, update_post_meta, get_posts and other functions are usually enough to deal with most situations. However, especially when dealing with custom tables, we sometimes need to do things that cannot be achieved by WordPress native features. This tutorial will explore the most important class in WordPress database interaction - wpdb, and share some development tips. We will introduce the dbDelta function used to create custom tables, but will not cover creating initial Word
2025-02-15 comment 0 413
Course Introduction：Classes and objects in PHP realize code organization and reuse through encapsulation, methods and access control. Define the class to use the class keyword, which contains attributes and methods, such as classCar{private$color; publicfunctionsetColor($newColor){$this->color=$newColor;}}; create objects to use the new keyword, such as $myCar=newCar(); access attributes and methods through the -> operator; public, protected, and private control access permissions to implement data encapsulation; the constructor __construct() is used for initialization
2025-07-16 comment 0 232
Course Introduction：After PHP connects to MySQL, the page blank is checked. Many beginners often encounter a headache when learning PHP connects to MySQL database: program operation...
2025-04-01 comment 0 971
Course Introduction：PDO Error Extraction: A Comprehensive GuidePDO, the powerful PHP class, offers efficient database interaction. However, extracting error...
2024-12-27 comment 0 791
Course Elementary 13821
Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.
Course Elementary 82357
Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).
Course Elementary 13174
Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.
Course Elementary 24625
Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.
Course Elementary 27484
Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.
2021-10-13 10:21:27 0 6 1136
TP5 provides it. What is the purpose of encapsulation here?
tp5 provides database operation classes. What is the purpose of encapsulation here?
2019-03-05 20:42:43 0 0 1167
There is a problem with the final call of php to implement image verification code?
2022-05-05 01:22:00 0 8 1263
The test database operation class db statically calls the getInstance method.
2022-08-18 17:23:59 0 1 935
