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Course Introduction：RSA Encryption and Decryption without Padding in PHP 5.3Question:Is there a PHP 5.3 class that enables RSA encryption/decryption without padding?...

2024-11-26 comment 0  1019

Course Introduction：Encrypting and Decrypting Text Using RSA in PHP without PaddingQuestion:Is there a PHP 5.3 class that facilitates RSA encryption and decryption...

2024-12-15 comment 0  708

Course Introduction：This article aims to solve the problem of how to correctly handle special characters, especially those containing HTML entity characters when developing encryption/decryption applications using Flets. By modifying the character processing logic, using the generator to parse characters one by one, and combining the dictionary to replace special characters, the accurate encryption and decryption functions are achieved. This article provides detailed code examples and explanations to help developers understand and apply these technologies.

2025-08-30 comment 0  302

Course Introduction：Implementing data packets in PHP can be implemented through array operations and loops. 1) Use loops and array operations to group student data by class; 2) Statistical analysis can be performed when grouping, such as calculating the number of students in each class; 3) Multi-level grouping can be implemented, such as grouping by class and gender, but attention should be paid to performance and memory usage.

2025-05-23 comment 0  468

Course Introduction：The visitor mode allows adding new operations to the class hierarchy without modifying the class. By defining the visitor interface ShapeVisitor, the element interface Shape and its specific classes Circle and Rectangle are implemented, and then specific visitors such as AreaCalculator and InfoPrinter are implemented. Finally, the object is created in the main function and the accept method is called to complete the double dispatch. This mode follows the principle of opening and closing. The new operations only need to expand the visitor class without changing the existing element class. It is suitable for graphics processing, compiler AST and other scenarios.

2025-08-06 comment 0  892

Course Elementary  13926

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  82482

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  13264

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  24731

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  27566

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.