Zend Server 2021.0

Zend Server is THE Professional PHP distribution with advanced value-add capabilities, including:

  • Over 80 of the most popular extensions and libraries
  • Z-Ray vision into your app increasing code quality and performance
  • Job queuing and caching for optimizing and boosting performance
  • Monitoring and root-cause analysis
  • Deployment and DevOps capabilities that help standardize and automate the full app lifecycle
  • H/A session clustering for maximum scalability and reliability
  • Secure developer visibility into production

If you are new to Zend Server, see these topics to get started:

What's New in Zend Server 2021.0

The following is a summary of new information with links to the most prominent topics. For a complete list, see the Release Notes.

New Additions

  • Added support for PHP 7.4, shipping 7.4.16.
  • New extensions available for Linux: pdo_oci, sqlsrv, and sodium; ffi is available when using PHP 7.4.

  • Supported platforms:

    • CentOS/RHEL 7.7 and 8 (both Linux and Power8)

    • Ubuntu 18.04 and 20.04 (both Linux and Power8)

    • Debian 9 and 10 (both Linux and Power8)

    • IBM i 7.2, 7.3, and 7.4

    • Windows Server 2016 and 2019

  • Added Redis extension directives to the Zend Server GUI.

  • Implemented the functionality to suspend/resume individual or multiple JobQueue queues using API commands. Use suspendQueue() and resumeQueue() for individual queues and suspendQueues() and resumeQueues() for multiple queues.

  • Added SELinux settings for Power8 and x86 architectures to fix failures on bootstrap and process restarts.

  • Users can now customize the command for restarting the web server via the zend_utils.restart_cmd directive.

  • Added support for configuring the mbstring mbstring.regex_stack_limit setting in the Admin GUI.

  • Added support for configuring the opcache.preload directive (PHP versions >= 7.2) in the Admin GUI.


  • Updated core dependencies used by Zend Server.

  • Updated ibm_db2 extensions to 2.1.2.

  • Updated XDebug to 2.9.8.

  • PHPToolkitForIBMi updated to version 1.8.3.

  • ZendServerSDK updated to 1.1.7.

  • Zend Server WebAPI token-based access is now idempotent.

  • Update Symfony Z-Ray plugin to version 1.0.6.

  • Enhanced log messages during Zend Server install to be more specific if the Zend Server or Web Server configuration installation fails.

Changes and Removals

  • ZendGlobalDirectives.ini file moved from /etc/conf.d/ to the /etc/ directory.

  • IBM i: now denies access to web.config and .htaccess files by default.