About

Zend Framework is an open source, object-oriented web application framework implemented in PHP 5.2.4+ and licensed under the new BSD license. Zend Framework 2 requires PHP 5.3.3+.

It is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase with a main focus on building more secure, reliable, and modern Web 2.0 applications & web services.

It is based on the MVC Architectural Design Pattern, which separates web applications into three different modules:

• Model
• View
• Controller

Information

If your question is about Zend Framework 2.x, please use zend-framework2 instead.

Zend Framework-1 End of Life Announced : 28 September 2016

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Features:

Zend Framework features include:

• All components are fully object-oriented PHP 5 and are E_STRICT compliant
  

• Use-at-will architecture with loosely coupled components and minimal interdependencies
  

• Extensible MVC implementation supporting layouts and PHP-based templates by default
  

• Support for multiple database systems and vendors, including MariaDB, MySQL, Oracle, IBM DB2, Microsoft SQL Server, PostgreSQL, SQLite, and Informix Dynamic Server
  

• Flexible caching sub-system with support for many types of backends, such as memory or a file system.

Resources:

• Zend Framework
  Official site with downloads, news, reference guide, API documentation, and quickstart tutorial.

• Community Resources
  Mailing lists, issue tracker, wiki

• Zend Framework on GitHub
  Official repository for Zend Framework 2, and other Zend Framework related tools and modules.

• Zend Framework Certification
  Information on becoming a Zend Certified Engineer

Zend is the company behind Zend Framework, but the correct naming is always Zend Framework or ZF for short.