PHP Tutorials - Herong's Tutorial Examples

∟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.

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These sections are omitted from this Web preview version. To view the full content, see information on how to obtain the full version this book.

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

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Takeaways:

• "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

 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

 Interface with Operating System

 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

 Managing File Upload

 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

 Parsing and Managing HTML Documents

 Configuring and Sending Out Emails

►Image and Picture Processing

 Managing ZIP Archive Files

 Managing PHP Engine and Modules on macOS

 Managing PHP Engine and Modules on CentOS

 Archived Tutorials

 References

 Full Version in PDF/EPUB

Image and Picture Processing - Updated in 2023, by Herong Yang