PHP Modules Tutorials - Herong's Tutorial Examples

∟GD Module - Manipulating Images and Pictures

This chapter provides tutorial examples and notes on GD module for manipulating images and pictures. Topics include trying 'Imager' module for PNG images; drawing graphical elements, setting transparent background, and copying images with GD Library.

GD Library of Image Functions

GD Library - Draw Graphical Elements

GD Library - Print 2 Pictures on 1 Page

GD Library - Create Transparent Image

Transparent Image Over Text Web Page

GD Library - Pad Transparent Image

Takeaways:

• GD Library is a collection of image functions that supports a variety of different image formats, including GIF, PNG, JPEG, WBMP, and XPM.
• GD Library allows you to draw graphical elements, set transparent background, copy images, etc.
• "Imager" is a PHP module for creating and altering 24-bit images.
• "Imager" supports only bmp, ico, pnm, raw, sgi and tga image file formats.
• "Imager::File::PNG" is a PHP module to support PNG file format. But I could not install it on macOS.

Table of Contents

 About This Book

 Introduction and Installation of PHP

 Managing PHP Engine and Modules on macOS

 Managing PHP Engine and Modules on CentOS

 cURL Module - Client for URL

 DOM Module - Parsing HTML Documents

►GD Module - Manipulating Images and Pictures

 MySQLi Module - Accessing MySQL Server

 OpenSSL Module - Cryptography and SSL/TLS Toolkit

 PCRE Module - Perl Compatible Regular Expressions

 SOAP Module - Creating and Calling Web Services

 SOAP Module - Server Functions and Examples

 Zip Module - Managing ZIP Archive Files

 References

 Full Version in PDF/EPUB

GD Module - Manipulating Images and Pictures - Updated in 2024, by Herong Yang