Course Introduction：The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.
2025-03-14 comment 0 1049
Course Introduction：The race condition is the data inconsistency problem caused by unorderly accessing shared resources between threads in a multi-threaded environment. 1. It may occur when multiple threads read and write the same variable at the same time and at least one thread modifies data; 2. Commonly used in non-thread-safe collection classes, singleton state modifications and other scenarios; 3. It can be identified through unstable results, tool detection, and outlier judgments; 4. Solutions include the use of synchronized, Lock interfaces, atomic classes, and thread-safe collections, while volatile is used to ensure visibility but cannot prevent all competition situations.
2025-07-16 comment 0 819
Course Introduction：This article compares Workerman, a high-performance PHP server, to traditional servers like Apache and Nginx. Workerman's multi-process/thread architecture offers superior concurrency and performance for real-time apps (chat, games) and long-running
2025-03-11 comment 0 410
Course Introduction：The use of operators is suitable for simple string stitching, but is inefficient in loops; 2. The concat() method is used for small-scale direct stitching, returning new strings; 3. StringBuilder efficiently splices a large number of strings in a single thread, and is recommended for use in loops; 4. StringBuffer is a thread-safe StringBuilder, used in multi-threaded environments but has low performance; 5. String.join() is suitable for using delimiters to connect multiple strings or collection elements; 6. String.format() is used to format output; methods should be selected based on performance and readability to avoid using operators in loops.
2025-08-11 comment 0 525
Course Introduction：High-frequency questions in Java interviews are mainly focused on basic syntax, object-oriented, multithreaded, JVM and collection frameworks. The most common questions include: 1. There are 8 basic Java data types, such as byte, short, int, long, float, double, char and boolean. It is necessary to note that String is not the basic data type; 2. Final is used to modify classes, methods or variables to represent immutable, and finally is used to ensure code execution in exception processing. Finalize is an Object class method for cleaning before garbage collection; 3. Multi-thread synchronization can be achieved through synchronized keywords, ReentrantLock, and vo.
2025-07-14 comment 0 740
Course Elementary 13924
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 82479
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 24727
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 27563
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.
2020-06-03 15:25:03 0 0 941
PHP cURL not showing all DOM tags when reviewing collection
2023-09-12 20:03:06 0 1 742
Laravel Modal does not return data
2024-03-29 10:31:31 0 1 666
Can I use the automatic generation module of thinkphp5 in Windows 7 system? How to configure and use
2017-10-10 17:04:14 0 2 1457
