International PHP Conference Berlin 2025

PHP 5.3.1 Release Announcement

The PHP development team is proud to announce the immediate release of PHP 5.3.1. This is a maintenance release in the 5.3 series, which includes a large number of bug fixes.

Security Enhancements and Fixes in PHP 5.3.1:

Key Bug Fixes in PHP 5.3.1 include:

For users upgrading from PHP 5.2 there is a migration guide available here, detailing the changes between those releases and PHP 5.3.

For a full list of changes in PHP 5.3.1, see the ChangeLog.

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