PHP class for compressing and resizing images

05 Dec 2017

PHP mainly uses GD library extension to operate image files. When we frequently use PHP to operate images, we will naturally encapsulate many functions, otherwise we will write too much repetitive code. When there are many functions related to pictures, we can consider sorting out these PHP functions, so we have the idea of ​​encapsulating them into classes. Then let’s take a look at how it is packaged below!

13 Jul 2016

Encapsulation class implementation for adding, compressing, and cutting PHP image watermarks. PHP encapsulation class implementation for adding, compressing, and cutting image watermarks. PHP mainly uses GD library extensions to operate image files. When we frequently use php to operate on images, they will be naturally encapsulated

14 Jul 2023

Tips for generating colorful verification code images using PHP and GD libraries Introduction: Verification code is a common network security technology. By requiring users to enter a verification code when logging in, registering, or submitting a form, you can effectively prevent automated attacks from robots and malicious programs. This article will introduce the techniques of using PHP and GD libraries to generate colorful verification code images, helping developers to add a certain degree of recognizability and artistry when creating verification codes. 1. Environment preparation Before starting, make sure that PHP and GD libraries have been installed in your development environment. Can

29 Jul 2016

Software for processing images: Software for processing images PHP Class implementation code for processing images: Copy the code as follows: <?php /** * author:yagas * email:yagas60@21cn.com */ class Image { /** Class protection Variables*/ protected $th_width = 100; protected $th_height = 50; protected $quality = 85; //Image quality protected $transparen

12 Jul 2023

Best practices for generating CAPTCHA images with shadow effects using PHP and GD libraries Captcha is a common security measure used to determine if a user is a real user and not a bot. A common way to generate a CAPTCHA is to create an image containing random characters and ask the user to identify and enter those characters from the image. In order to increase the security of the verification code, we can add some visual effects, such as shadow effects, to the generated verification code image. This article will introduce the use of PHP and GD libraries to generate verification with shadow effects.

29 Jul 2023

Best Practices for Image Resizing Using PHP and Imagick Quote: In the modern Internet era, images are an integral part of web pages and applications. In order to improve user experience and speed up web page loading, images usually need to be resized to adapt to different display devices and resolutions. This article will introduce how to use php and the Imagick library to implement best practices for image resizing, and provide code examples. 1. Install the Imagick extension. Before starting, we first need to ensure that the server