Zend Server 2021.4 Documentation
Zend Server is the Professional PHP distribution: An integrated application platform for mobile and web applications, deployment, debugging, and monitoring.

Use Zend Server Z-Ray to inspect, debug and optimize your PHP pages by monitoring requests made to the Web server.

Job Queue provides offline asynchronous processing of PHP tasks and job-management tools

Application performance monitoring gives you a complete view of how the application and server are performing during development or production.

If you are new to Zend Server, see these topics to get started:
What's New in Zend Server 2021.4
The following is a summary of what's new in Zend Server. For a complete list, see the Changelog.
- Deprecated support for IBM i v7r2 due to OpenSSL 1.1.1 deprecation by IBM.
- All IBM i >= v7r3 must use at least OSS base 7.3 to be able to install or upgrade.
- Updated extensions
- Security fixes and UX improvements
© 2025 Perforce Software, Inc. All rights reserved.
Perforce and other identified trademarks are the property of Perforce Software, Inc., or one of its affiliates. Such trademarks are claimed and/or registered in the U.S. and other countries and regions. All third-party trademarks are the property of their respective holders. References to third-party trademarks do not imply endorsement or sponsorship of any products or services by the trademark holder. Contact Perforce Software, Inc., for further details.