Zend Server Documentation
Zend Server is the Professional PHP distribution: An integrated application platform for mobile and web applications, deployment, debugging, and monitoring.
Z-Ray
Use Zend Server Z-Ray to inspect, debug, and optimize your PHP pages
Job Queue
Job Queue provides offline asynchronous processing of PHP tasks and job-management tools
APM
Monitor apps and server performance during development or production
Get started
If you are new to Zend Server. follow the steps in our Getting Started section.
Additional resources
What's New in Zend Server 2021.4.3
The following is a summary of what's new in Zend Server. For a complete list, see the Changelog.
Zend Server 2021.4.3:
Implemented PHP security fixes for the following vulnerabilities: CVE-2025-1735, CVE-2025-6491, CVE-2025-1220.
Zend Server 2021.4.2:
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Zend Server 2021.4.2 picks up LTS patches introduced in ZendPHP, providing fixes for each of CVE-2025-1219, CVE-2025-1736, CVE-2025-1861, CVE-2025-1734, and CVE-2025-1217, which primarily address TLS issues in the PHP stream API.
Zend Server 2021.4:
- 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
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