What's new in PHP V5.3, Part 5, Upgrading from PHP V5.2

Changes, compatibility, and deprecation

From the developerWorks archives

John Mertic

Date archived: May 14, 2019 | First published: February 24, 2009

This "What's new in PHP V5.3" series covers new and exciting features in PHP V5.3, which is scheduled to release soon. Part 1 looks at the changes made to the object-oriented programming and object handling in PHP V5.3, Part 2 looks at lambda functions and closures. In Part 3, we look at namespaces, which is one of the most anticipated and the most debated feature in this release of PHP. In Part 4, we take a close look at Phar, which is an archive format that can be used within PHP. In this final part of the series, learn about things to consider when upgrading from PHP V5.2. There are changes that break backward-compatibility and features that are deprecated in PHP V5.3 for removal in future versions. Some enhancements to existing features within PHP are also covered.

This content is no longer being updated or maintained. The full article is provided "as is" in a PDF file. Given the rapid evolution of technology, some content, steps, or illustrations may have changed.

Zone=Open source
ArticleTitle=What's new in PHP V5.3, Part 5: Upgrading from PHP V5.2