PHP common image processing classes

07 Feb 2017

/*Known issues: 1. In the image scaling function, use the imagecreatetruecolor function to create a canvas and use the transparency processing algorithm, but images in PNG format cannot be transparent. Creating a canvas using the imagecreate function can solve this problem, but the number of colors in the scaled image is too small.

12 Jul 2016

Commonly used image processing classes in php. Commonly used image processing classes in php, ?php /*Known issues: 1. In the image scaling function, use the imagecreatetruecolor function to create a canvas and use a transparency processing algorithm, but images in PNG format cannot

03 May 2020

I encountered a project before that used image processing technology. Similar to the picture below, the picture is divided into three parts, the background picture, the QR code picture, and the text under the QR code picture. Among them, the QR code image and text are dynamically generated, and the QR code image and text description are different for different activities. How to accomplish this requirement, we need to use PHP image processing technology to achieve it. PHP's image processing is very powerful and can do many things. Common ones include verification code images, image watermarks, thumbnails, etc. Basic knowledge First we need to install the extended GD library of php. After having him...

09 Jun 2023

PHP is a very popular server-side scripting language that can handle a wide variety of web tasks, including image processing. This article will introduce some image processing methods in PHP and some common problems you may encounter. 1. How to process images in PHP 1. Use the GD library GD (GNU Image Processing Library) is an open source library for image processing. It allows PHP developers to create and manipulate images using scripts, including scaling, cropping, rotating, filtering, and drawing. Before using the GD library, you need to make sure

13 Jul 2016

PHP image processing image background and canvas operations. Picture background and canvas operations of PHP image processing, such as verification codes or generating statistical icons based on dynamic data, as well as some GD library operations introduced earlier, are all dynamically drawn images. And in

12 Jul 2016

PHP image processing class library and demonstration sharing, PHP image processing class library. PHP image processing class library and demonstration sharing, PHP image processing class library I simply wrote a PHP image processing class library. Although it has relatively few functions, it is not too advanced at present and will be used in the future.