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Course Introduction：Imagick PHP extension library details: Add text watermark to images This article will explain how to use PHP's Imagick extension library to add text watermarks to images. We will explore a variety of methods, including simple text overlay, creating transparent text watermarks using font masks, and more advanced text tiling techniques. Key points: Imagick is a powerful PHP extension library that can be used to process images, including adding text watermarks. Text watermarking can be achieved by creating an Imagick class instance, reading an image, setting the font properties using the ImagickDraw instance, and then adding text to the image using the annotateImage() method. There are many ways to add text

2025-02-25 comment 0  343

Course Introduction：Yes, the switch statement in PHP itself is not a code smell, but when it is repeated in multiple files, contains too many branches, is tightly coupled with business logic, violates the principle of single responsibility, or makes judgments based on object types, it becomes an anti-pattern; 1. Use policy mode processing factory: define processing interfaces and concrete classes, map types to processors through factory mapping, add new types only requires registration and no modification of existing code; 2. Use class-based distribution (polymorphism): let the object itself determine behavior, implement concrete logic by inheriting abstract classes, and directly execute methods when calling without switching; 3. Use closure mapping (suitable for simple scenarios): Use associative arrays to store the mapping of type to closures, avoid branch structure but are less testable; 4. PHP8 can be used

2025-08-02 comment 0  234

Course 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  700

Course Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w

2025-01-10 comment 0  864

Course Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...

2025-01-10 comment 0  871

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.