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Course Introduction：Key Points GD and ImageMagick are both popular PHP image processing libraries. GD is more widely used and ImageMagick is more powerful. In terms of performance, there is no absolute advantage or disadvantage between the two, and the speed depends on the specific application scenario. The encoding styles are significant. GD adopts procedural programming, and ImageMagick supports object-oriented programming through the Imagick class. In addition to these two libraries, there are other options, such as cloud image processing platforms or components that have been integrated into the application. introduction In PHP applications, if you need to create thumbnails, apply image filters, or perform other image conversions, you need to use the image processing library. Usually, you'll choose GD or ImageMagick. But which library

2025-02-22 comment 0  1307

Course Introduction：Pillow is a powerful and easy-to-use Python image processing library. 1. First install and import the library through pipinstallpillow; 2. Use Image.open() to open the image, save() to save the image, and the format is automatically recognized by the file extension; 3. resize() can adjust the image size but not maintain the aspect ratio, thumbnail() creates thumbnail while maintaining the aspect ratio; 4.crop() accepts (left, upper, right, lower) tuple for cropping; 5.rotate() rotates the image counterclockwise at the angle, expand=True can retain the complete image, and transpose() can realize water

2025-08-02 comment 0  254

Course Introduction：Common Go image processing libraries include standard library image packages and third-party libraries, such as imaging, bimg, and imagick. 1. The image package is suitable for basic operations; 2. Imaging has a complete function and a simple API, which is suitable for most needs; 3. Bimg is based on libvips, has strong performance, which is suitable for large images or high concurrency; 4. Imagick binds ImageMagick, which is powerful but has heavy dependencies. Quickly implement image scaling and cropping. You can use the imaging library to complete it through a few lines of code in Resize and CropAnchor functions, and support multiple parameter configurations. Adding filters or adjusting tones can be achieved through the color transformation function provided by imagination, such as Graysc

2025-07-21 comment 0  344

Course Introduction：PHP iterator and generator: a powerful tool for efficient processing of large data sets Arrays and iterations are the cornerstone of any application. As we get new tools, the way we use arrays should also improve. For example, a generator is a new tool. At first we only have arrays, and then we gain the ability to define our own class array structure (called iterators). But since PHP 5.5, we can quickly create class iterator structures called generators. Generators look like functions, but we can use them as iterators. They provide us with a simple syntax for creating essentially interruptible, repeatable functions. They are amazing! We will look at several areas where generators can be used and explore the need to note when using generators

2025-02-16 comment 0  504

Course Introduction：In PHP, custom session processing mechanism requires implementing the SessionHandlerInterface interface and registering handler. 1. Implement six core methods: open(), close(), read(), write(), destroy() and gc() to complete the session storage logic; 2. Create a custom handler class instance and register it through session_set_save_handler(); 3. Call session_start() before use to start the session. Suitable for improving performance, centralized management and extension functions. It is recommended to pay attention to permission control, concurrency problems and security protection to ensure the correct operation of GC and ensure the sess

2025-07-14 comment 0  960

Course Elementary  13824

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  82359

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  13178

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  24628

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  27486

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.