Image and Picture Processing
This chapter provides tutorial examples and notes on creating and processing images and managing image file formats. 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
- "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.
- 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.
Table of Contents
About This Book
Introduction and Installation of PHP 7.3
PHP Script File Syntax
PHP Data Types and Data Literals
Variables, References, and Constants
Expressions, Operations and Type Conversions
Conditional Statements - "if" and "switch"
Loop Statements - "while", "for", and "do ... while"
Function Declaration, Arguments, and Return Values
Arrays - Ordered Maps
Introduction of Class and Object
Integrating PHP with Apache Web Server
Retrieving Information from HTTP Requests
Creating and Managing Sessions in PHP Scripts
Sending and Receiving Cookies in PHP Scripts
Controlling HTTP Response Header Lines in PHP Scripts
MySQL Server Connection and Access Functions
Functions to Manage Directories, Files and Images
SOAP Extension Function and Calling Web Services
SOAP Server Functions and Examples
Localization Overview of Web Applications
Using Non-ASCII Characters in HTML Documents
Using Non-ASCII Characters as PHP Script String Literals
Receiving Non-ASCII Characters from Input Forms
"mbstring" Extension and Non-ASCII Encoding Management
Managing Non-ASCII Character Strings with MySQL Servers
Configuring and Sending out Emails
►Image and Picture Processing
Managing PHP Engine and Modules on macOS
Managing PHP Engine and Modules on CentOS
Full Version in PDF/EPUB