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Article Introduction：A simple way to implement unlimited classification in PHP, unlimited classification in PHP. A simple method to implement unlimited classification in PHP, unlimited classification in PHP. This article describes an example of a simple method to implement infinite classification in PHP. Share it with everyone for your reference, the details are as follows: Database

2016-07-12 comment 0  971

Article Introduction：PHP tree-implementation method that does not require recursion, PHP tree does not require recursion. PHP tree - an implementation method that does not require recursion, PHP tree does not require recursion PHP tree - an implementation method that does not require recursion /** * Create a tree array of parent nodes * Parameters * $ar array, organized in an adjacency list

2016-07-06 comment 0  1157

Article Introduction：PHP tree-implementation method that does not require recursion, PHP tree does not require recursion. PHP tree - an implementation method that does not require recursion, PHP tree does not require recursion PHP tree - an implementation method that does not require recursion /** * Create a tree array of parent nodes * Parameters * $ar array, organized in an adjacency list

2016-07-12 comment 0  923

Article Introduction：How does RecursiveIteratorIterator work in PHP?PHP's RecursiveIteratorIterator is an implementation of an iterator that supports tree traversal....

2024-11-20 comment 0  1142

Article Introduction：PHP implements RSA encryption class instance. Example of implementing RSA encryption class in PHP This article mainly introduces the implementation of RSA encryption class in PHP. The example analyzes the techniques of implementing encryption and decryption in PHP's custom RSA class. It is of great practical value. Friends who need it can

2016-07-13 comment 0  1124

Article Introduction：Callback Implementation in PHPIn PHP, callbacks, also referred to as "callable" values, enable the referencing of functions or class methods for...

2024-10-28 comment 0  935

Article Introduction：PHP combination, PHP permutation and combination algorithm. PHP combination, PHP permutation and combination algorithm In order to improve the reusability of code and reduce the coupling of code (two ways of combination implementation) Mode 1: 1? PHP 2 // Combination mode 1 3 class Person{

2016-07-12 comment 0  1206

Article Introduction：A brief analysis of the usage differences between php static methods and non-static methods, a brief analysis of php. A brief analysis of the usage differences between PHP static methods and non-static methods. A brief analysis of PHP In PHP programming, the static keyword declares that an attribute or method is related to the class, rather than to a specific implementation of the class.

2016-07-12 comment 0  874

Article Introduction：Minor [PHP Framework] 6. Proxy, minorphp framework proxy. Minor [PHP Framework] 6. Proxy, minorphp framework proxy 6.1 Proxy Minor provides an implementation of the proxy mode similar to the InvocationHandler interface in Java and a Proxy class. For details, please refer to

2016-07-06 comment 0  924

Article Introduction：Minor [PHP Framework] 6. Proxy, minorphp framework proxy. Minor [PHP Framework] 6. Proxy, minorphp framework proxy 6.1 Proxy Minor provides an implementation of the proxy mode similar to the InvocationHandler interface in Java and a Proxy class. For details, please refer to

2016-07-12 comment 0  1129

Article Introduction：Slim Framework Middleware: Building Powerful PHP Micro Applications Slim is a powerful PHP mini framework, where middleware features allow implementation of various filter-style services such as authentication and caching in applications. Middleware encapsulates applications and can affect the application's environment as well as request and response objects. Key points: Slim's middleware is a powerful feature that allows the implementation of various filter-style services such as authentication and caching. Middleware encapsulates applications and can affect the application's environment, request and response objects. To implement middleware in Slim, you need to write a class that extends the SlimMiddleware class and overrides the call() method. This method is

2025-02-24 comment 0  575

Article Introduction：Dependency injection (DI) makes PHP code easier to test and maintain by reducing tight coupling between components. Its core advantages include: 1. Simplify unit testing, allowing injection of simulated objects to replace real services, avoid side effects, and improve testing speed and reliability; 2. Promote loose coupling, making the class dependency interface rather than concrete implementation, making it easier to independently modify and expand components; 3. Improve reusability and configuration flexibility. The same class can achieve diversified behavior by injecting different dependencies in different contexts, such as the development, production and testing environments using different logging methods. In addition, modern PHP frameworks such as Symfony and Laravel built-in DI containers further simplify the implementation of object management and dependency injection.

2025-06-04 comment 0  515

Article Introduction：Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

2025-04-13 comment 0  822

Article Introduction：Core points PSR-3, a common log object interface, allows developers to write reusable code without relying on any specific log implementation, thereby improving compatibility between different log libraries in PHP. The PSR-3 interface provides eight methods to handle messages of different severity levels, and a common log() method that can receive any severity levels. Its design is to solve the problem of log implementation incompatibility. Although PSR-3 has many benefits, some log libraries do not support it natively. However, developers can create PSR-3 compliant adapters by leveraging the adapter pattern and extending the AbstractLogger class provided in the Psr/Log library. Many major PHP projects

2025-02-24 comment 0  1222

Article Introduction：Key Points PHP's array interface allows programmers to simulate the characteristics of native data types in custom classes, similar to Python's methods. This enables custom classes to work like arrays and allows common array operations such as counting elements, looping through elements, and accessing elements through indexes. An interface is like a contract for a class, specifying the methods that a class must contain. They allow encapsulation of implementation details and provide syntax sugar, thereby improving the readability and maintainability of the code. PHP provides a library of predefined interfaces that can implement these interfaces to make objects similar to arrays. Countable, ArrayAccess and Iterator interfaces in PHP allow objects to pass cou respectively

2025-02-22 comment 0  495

Article Introduction：Binarysearchtrees (BSTs) is a data structure that supports efficient search, insertion and deletion operations. Its core mechanism is that the left subtree value of each node is smaller than the node value, and the right subtree value is greater than the node value. In terms of implementation, first define the Node class containing values ??and references to the left and right child nodes; secondly, implement the insertion function through recursion or iterative method; then implement the search function, and decide to search for the left or right subtree based on the comparison results; the deletion operation is more complicated, and it is necessary to deal with three situations: no child node, one child node and two child nodes, and two child nodes need to be found in the middle order and replaced; in addition, it is recommended to use recursion simplified implementation, use iteration when considering the large tree to avoid stack overflow, and pay attention to testing the boundary situation and building a self-balancing tree to improve

2025-06-22 comment 0  766

Article Introduction：In PHP, add 6 months to date. The commonly used method is to use the DateTime class with the modify() or add() method. 1. Use modify('6months') to achieve rapid implementation, but may jump when processing the end of the month. For example, 2024-03-31 plus six months will become 2024-09-30; 2. Use add(newDateInterval('P6M'))) to be more flexible and controllable, suitable for complex logic; 3. If you need to retain the "end of the month" semantics, you can adjust them in combination with modify('lastday of thismonth'); 4. Pay attention to the uniform time zone settings and date formats, and it is recommended to use YYYY-MM-DD to avoid parsing errors.

2025-07-06 comment 0  791

Article Introduction：SOLID principle improves code maintainability and scalability through five core principles in PHP object-oriented design. 1. The single responsibility principle (SRP) requires that each class has only one responsibility, and the separation of concerns is achieved through splitting functions; 2. The opening and closing principle (OCP) advocates extending behavior through interfaces or combinations rather than modifying the original code; 3. The Richter replacement principle (LSP) ensures that subclasses can replace the parent class without destroying logic and avoid behavior inconsistencies; 4. The interface isolation principle (ISP) recommends defining fine-grained interfaces to avoid redundant dependencies; 5. The dependency inversion principle (DIP) decoupling high-level and underlying modules by relying on abstract types (such as interfaces) rather than concrete implementation, and is commonly implemented by dependency injection.

2025-06-19 comment 0  627

Article Introduction：The application of SOLID principle in PHP includes five core points: 1. The single responsibility principle (SRP) requires each class to be responsible for only one task, and improve maintainability through separation functions such as UserService, UserRepository and EmailService; 2. The opening and closing principle (OCP) emphasizes extending openness, modifying closing, and using interfaces or abstract classes to implement new functions without changing old code. For example, the PaymentMethod interface supports multiple payment methods; 3. The Richter replacement principle (LSP) ensures that subclasses can replace parent classes without destroying logic, and avoid behavior abnormalities in the inheritance tree, such as Square should not inherit Rectangle; 4. The interface isolation principle (ISP) advocates dismantling

2025-06-29 comment 0  612

Article Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  652