# Introduction

`Zend_Tool_Framework` is a framework for exposing common functionalities such as the creation of project scaffolds, code generation, search index generation, and much more. Functionality may be written and exposed via PHP classes dropped into the PHP include_path, providing incredible flexibility of implementation. The functionality may then be consumed by writing implementation and/or protocol-specific clients -- such as console clients, XML-RPC, SOAP, and much more.

`Zend_Tool_Framework` provides the following:

- Common interfaces and abstracts that allow developers to create functionality and capabilities that are dispatchable by tooling clients.

- Base client functionality and a concrete console implementation that connect external tools and interfaces to the `Zend_Tool_Framework`. The Console client may be used in CLI environments such as unix shells and the Windows console.

- "Provider" and "Manifest" interfaces that can be utilized by the tooling system. "Providers" represent the functional aspect of the framework, and define the actions that tooling clients may call. "Manifests" act as metadata registries that provide additional context for the various defined providers.

- An introspective loading system that will scan the environment for providers and determine what is required to dispatch them.

- A standard set of system providers that allow the system to report what the full capabilities of the system are as well as provide useful feedback. This also includes a comprehensive "Help System".

Definitions that you should be aware of through this manual with respect to `Zend_Tool_Framework` include:

- `Zend_Tool_Framework` - The framework which exposes tooling capabilities.

- Tooling Client - A developer tool that connects to and consumes `Zend_Tool_Framework`.

- Client - The subsystem of `Zend_Tool_Framework` that exposes an interface such that tooling clients can connect, query and execute commands.

- Console Client / Command Line Interface / `zf.php` - The tooling client for the command line.

- Provider - A subsystem and a collection of built-in functionality that the framework exports.

- Manifest - A subsystem for defining, organizing, and disseminating provider requirement data.

- `Zend_Tool_Project` Provider - A set of providers specifically for creating and maintaining Zend Framework-based projects.