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Article Introduction：PHP dynamically creates properties and methods, copies objects, compares objects, loads specified files, automatically loads class files, and namespaces. PHP dynamically creates properties and methods, copies objects, compares objects, loads specified files, automatically loads class files, namespaces, PHP Preface: Dynamically creates properties and methods, copies objects

2016-07-12 comment 0  1027

Article Introduction：PHP operates classes based on session and cookie user login status, sessioncookie. php based on session and cookie user login status operation class, sessioncookie 1. User login status operation class UserLogin? php final class UserLogin { public function __construct() { } publi

2016-07-12 comment 0  963

Article Introduction：PHP operates class code based on session and cookie user login status, sessioncookie. PHP code based on session and cookie user login status operation class, sessioncookie 1. User login status operation class UserLogin phpfinal class UserLogin {public function __construct() {}pub

2016-07-12 comment 0  1078

Article Introduction：Directory Iterator in PHP: Listing and Sorting FilesThis article explores PHP's DirectoryIterator class, allowing you to iterate through files in...

2024-11-27 comment 0  791

Article Introduction：PHP uses both session and cookie to save the implementation code of user login information, sessioncookie. PHP uses both session and cookie to save the implementation code of user login information. sessioncookie 1. User login status operation class UserLogin phpfinal class UserLogin { public function __cons

2016-07-12 comment 0  939

Article Introduction：C language data structure: The data representation of the tree and graph is a hierarchical data structure consisting of nodes. Each node contains a data element and a pointer to its child nodes. The binary tree is a special type of tree. Each node has at most two child nodes. The data represents structTreeNode{intdata;structTreeNode*left;structTreeNode*right;}; Operation creates a tree traversal tree (predecision, in-order, and later order) search tree insertion node deletes node graph is a collection of data structures, where elements are vertices, and they can be connected together through edges with right or unrighted data representing neighbors.

2025-04-04 comment 0  1504

Article Introduction：The C 17 file system library provides a unified, type-safe interface, making file and directory operations more intuitive and efficient. 1) The std::filesystem::path class simplifies path operation; 2) The std::filesystem::directory_iterator facilitates traversing directories; 3) Pay attention to exception handling and performance optimization to ensure the robustness and efficiency of the program.

2025-04-28 comment 0  1008

Article Introduction：Free and open source PHP Web Framework Yii Getting Started Guide Installation Prerequisites: PHP 7.2, Composer Create Application: composer create-project yiisoft/yii2-app-basic your-app-name Project Structure: Contains assets, config, controllers, models, runtime, views, web, etc. Create Controller: Create classes in the controllers directory, such as SiteController, define operation methods and create models: In models

2025-04-18 comment 0  749

Article Introduction：To safely handle file system operations in PHP, first of all, you need to verify and clean all user input, use basename() to extract file names, avoid directly allowing users to input paths, and check whether the input meets expectations through regular expressions; secondly, restrict files to access a secure directory, you can compare the allowable paths by using realpath() in the open_basedir configuration or code; thirdly, set correct file and directory permissions, recommend 0755 directory and 0644 file permissions, avoid using 0777; fourthly, use PHP built-in functions to process files to avoid executing shell commands; finally record and monitor file operation behavior to discover abnormal activities. These steps can effectively prevent unauthorized access and data loss

2025-07-10 comment 0  117

Article Introduction：Laravel 11.35 introduces the Uri class based on the PHP League URI library. Uri simplifies the process of manipulating and processing URIs in Laravel applications and provides some convenient features about named routing. Basic Operation The core function of the Uri class is to create and manipulate URI strings, including queries, fragments, and paths: use Illuminate\Support\Uri; $uri = Uri::of('https://laravel-news.com') ->withPath('links') ->wit

2025-03-05 comment 0  788

Article Introduction：To run a PHP script, you need to select the appropriate environment according to the purpose. 1. Local operation: Use integrated packages such as XAMPP, WAMP or MAMP to build an environment, put the PHP file into the http://localhost/yourfile.php through the browser to execute; Linux users can check and install PHP with sudoapt. 2. Command line operation: It is suitable for automation tasks, ensure that after PHP is added to PATH, enter the script directory in the terminal and execute phpscript.php. 3. Online testing: Quickly test code snippets through platforms such as 3v4l.org, phptester.net, etc., suitable for learning and sharing, but not for development of complete

2025-06-29 comment 0  809

Article Introduction：Carbon: PHP date and time processing tool Carbon is a lightweight PHP library for simplifying the processing of dates and times. It is based on and extends the core DateTime class and adds many convenient methods to make date-time operation easier. This article will introduce the basic usage of Carbon and demonstrate how to use it in a real project. Core points: Carbon is a library designed for PHP date and time operations, extends the core DateTime class and adds user-friendly methods to provide a more intuitive experience. The library can be installed using Composer and can be instantiated from strings, timestamps, or other DateTime or Carbon instances

2025-02-16 comment 0  497

Article Introduction：To create an object in PHP, you must first define the class and then instantiate it with the new keyword. 1. Classes are blueprints of objects, defining attributes and methods; 2. Create object instances using new; 3. Constructors are used to initialize different data; 4. Access attributes and methods through ->; 5. Pay attention to access control of public, private, and protected; 6. Multiple independent instances can be created, each maintaining its status. For example, after defining the Car class, newCar('red') creates an object and passes a parameter, $myCar->startEngine() calls the method, and each object does not affect each other. Mastering these helps build clearer, scalable applications.

2025-06-24 comment 0  846

Article Introduction：The security of PHP sessions can be achieved through the following measures: 1. Use session_regenerate_id() to regenerate the session ID when the user logs in or is an important operation. 2. Encrypt the transmission session ID through the HTTPS protocol. 3. Use session_save_path() to specify the secure directory to store session data and set permissions correctly.

2025-05-01 comment 0  1003

Article Introduction：When running PHP, you need to pay attention to the environment configuration and container stability when running Docker. First, prepare a PHP project with a clear structure, ensure that there are dependent files such as composer.json, and place the code in a separate directory for mounting; second, use the official PHP image to quickly start container testing, such as using the CLI image to execute simple scripts; then write a custom Dockerfile image, copy the code, install the extensions, and enable the necessary modules; finally handle debugging and common problems, including permissions, missing dependencies, Apache operation and log viewing. It is recommended to build a custom image and optimize the configuration when deploying and launching it online.

2025-06-27 comment 0  815

Article Introduction：PSR (PHP Standard Recommendation) is a coding specification formulated by PHP-FIG, aiming to improve compatibility and collaboration efficiency in PHP development. Its core purpose is to make the code between different frameworks and projects easier to read and maintain by unifying code style, structure and automatic loading standards. The main PSRs include: ① PSR-1 basic coding standard; ② PSR-4 automatic loading standard; ③ PSR-12 extended code style guide. Application methods include: ① Use PHPCS or PHP-CS-Fixer for code inspection; ② Set the pre-commit hook to ensure the code is neat; ③ Follow the naming and directory structure specifications; ④ Use PascalCase class name and camelCase method name. Common misunderstandings such as mixing tab characters and empty

2025-06-17 comment 0  296

Article Introduction：Core points Drupal 8's ConfigFormBase class provides additional functionality to interact with the configuration system, allowing tools to convert forms to stored values. This can be done by replacing the extension class with ConfigFormBase and making the necessary changes in the form. The configuration in Drupal 8 is stored in a YAML file and can be changed through the UI for deployment across different sites. The service container in Drupal 8 allows the creation of a service, that is, a PHP class that performs global operations, and registers it into the service container for access. Dependency injection is used to pass objects to other objects, ensuring decoupling. You can create de in the root directory of the module

2025-02-21 comment 0  1179

Article Introduction：To use Composer to set up automatic loading of PHP projects, you must first edit the composer.json file and select the appropriate automatic loading method. If the most commonly used PSR-4 standard is adopted, the mapping of namespace and directory can be defined in the psr-4 field of autoload, such as mapping MyApp\ to src/directory, so that the MyApp\Controllers\HomeController class will automatically load from src/Controllers/HomeController.php; 1. After the configuration is completed, run composerdumpautoload to generate an automatic loading file; 2. If you need to be compatible with old code, you can use it.

2025-06-19 comment 0  714

Article Introduction：Composer is a PHP dependency management tool that manages project dependencies through composer.json file. 1. Install Composer: Run several commands and move them to the global path. 2. Configure Composer: Create composer.json file in the project root directory and run composerinstall. 3. Dependency management: Specify the library and its version through composer.json, and use semantic version number control. 4. Use Autoloading: Define the automatic loading rules of the class through the autoload field to simplify development. 5. Package management: Supports private library management, defines the private library address through the repositories field

2025-04-18 comment 0  989

Article Introduction：Core points PHP exception is a special class that can be thrown and caught to indicate unexpected events. Unlike unrecoverable errors, exceptions are intended to be processed by the calling code and bubble upward along the execution chain until they are caught. The difference between PHP errors and exceptions is that the error is irrecoverable and occurs in the main execution loop, indicating that there is a problem with the stability of the code or environment; while the exception is recoverable and may occur outside the main execution loop, and does not indicate the system. Unstable. Not all non-successful situations require exceptions to be thrown. Exceptions should be thrown only if they really cannot continue execution. This means that an action that is not a normal operation or standard, an abnormality, deviates from normal and expected situations. Throw a general Exception

2025-02-25 comment 0  750