PHP 8 Programming Tips, Tricks, and Best Practices/

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Dealing with Changes to the GD Extension

Learn about the functions that produce objects instead of resources and other updates to GD extension in PHP 8.

We'll cover the following...

GD extension resource-to-object migration
GD extension compile flag changes
Other GD extension changes

The GD (Graphics Draw) extension is an image manipulation extension that leverages the GD library. GD originally stood for GIF Draw. Oddly, the GD library had to withdraw support for the Graphics Interchange Format (GIF) after Unisys revoked the open-source license for the compression technology used when generating GIFs. After 2004, however, the Unisys patent on this technology expired and GIF support was restored. As it stands today, the GD extension offers support for the Joint Photographic Experts Group (JPEG or JPG), Portable Network Graphic (PNG), GIF, X BitMap (XBM), X PixMap (XPM), ...

Introduction

Section 1: PHP 8 Tips

Introducing New PHP 8 OOP Features

PHP 8's Functional Additions

Taking Advantage of Error-Handling Enhancements

Making Direct C Language Calls

Section 2: PHP 8 Tricks

Discovering Potential OOP Backward-Compatibility Breaks

Understanding PHP 8 Functional Differences

Avoiding Traps When Using PHP 8 Extensions

Learning about PHP 8's Deprecated or Removed Functionality

Section 3: Best Practices

Mastering PHP 8 Best Practices

Improving Performance

Migrating Existing PHP Apps to PHP 8

Creating PHP 8 Applications Using Asynchronous Programming

Conclusion

Dealing with Changes to the GD Extension