Remi Collet has released PHP 8.4.21RC1 and 8.5.6RC1 packages for testing in Fedora and RHEL-based distributions, allowing administrators to preview upcoming changes safely. These packages support parallel installation, enabling teams to verify compatibility without affecting live servers, and come with updated external libraries that may require adjustments to locale formatting and database connection settings. Testing these release candidates is crucial as PHP 8.3 has entered security-only mode, and using the Software Collection method ensures existing applications remain stable while developers test the new versions. The parallel installation approach simplifies rollback if issues arise, making it a recommended strategy for teams preparing for the official stable releases

PHP 8.4.21RC1 and 8.5.6RC1 Fedora RHEL Packages released

Remi Collet has released PHP 8.5.6RC1 and 8.4.21RC1 packages in testing repositories for Fedora and RHEL-based distributions, giving administrators a safe way to preview upcoming changes before the stable rollout. These builds support parallel installation through Software Collections or direct module switches, allowing teams to verify compatibility without disrupting live servers. The latest releases ship with updated external libraries like libicu 74.2 and Oracle Instant Client 23.9, which may require developers to adjust locale formatting and database connection settings. Testing these candidates now prevents emergency rollbacks once PHP 8.3 enters security-only mode and the final versions go live.

PHP 8.4.21RC1 and 8.5.6RC1 Fedora RHEL Packages released @ Linux Compatible