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before upload before upload Presentation Transcript

  • Introducing: Zend Framework John Coggeshall
  • Welcome
    • Today I’ll be introducing you to the Zend Framework
      • What it is
      • Why we’re doing it
      • How to use it
      • Where it’s going
      • How to be a part of it
  • Getting Started
    • Zend Framework is..
      • A modular collection of PHP classes based on PHP 5 to simplify common tasks
      • A starting point for your applications
      • A demonstration of PHP 5 best practices
      • A smaller component of the PHP Collaboration Project
    • Zend Framework isn’t …
      • A free-reign open source project
      • A religion
  • Goals of the Framework
    • Zend Framework strives to be fundamentally….
      • An industry-leading framework for PHP application development
      • A partnership between many companies already experienced in PHP Framework development
    • Zend Framework strives to be technically…
      • A source of high-quality, PHP 5 / E_STRICT compatible application components
      • Completely PHP 5 powered, requiring as few external PHP extensions as necessary
      • A minimal object hierarchy to achieve the necessary goals
      • Modular design allowing developers to use the framework at will, as they see fit.
  • Why Yet another Framework?
    • Keep PHP competitive with other technologies
      • .NET, Java, etc.
    • Provide “clean” IP to enable commercial use
      • Real companies can’t just “borrow” code from the Internet without clear licensing
    • “Extreme Simplicity”: It may not be simple technically, but using it should be.
    • Take full advantage of PHP 5
  • The Framework License
    • Zend Framework is licensed using a PHP/BSD style license
      • Anyone can use it, for anything, no strings attached – period.
    • Along with the license of the framework itself, contributors must sign a Contributor License Agreement (CLA)
  • There’s no such thing as a free…
    • Why spend so much time and effort on something, just to give it away?
      • Yes, we’re still interested in making money
    • For the continued success of PHP it must be a collaboration beyond OSS hackers
      • Through the PHP Collaboration project, and projects like Zend Framework, we can leverage the knowledge of some of the best in the industry in the benefit of PHP as a whole
      • As you might expect, Zend benefits with PHP
  • We eat our own dog food
    • Zend Framework is more than unit-tested, it is used in real-life production environments
      • Gives us the ability to test performance, ease of use, etc. in a practical environment
      • Zend and its partners are already using the preview release of the Framework to speed development of their applications
      • Both the Framework homepage (framework.zend.com) and our new Developer’s Zone (devzone.zend.com) use the preview release of Framework as their foundation.
  • The grail: Extreme Simplicity
    • Many of PHP 5’s most exciting new technologies are really simple to use:
      • Simple XML
      • SOAP
      • Tidy
    • While the underlying technologies may be extremely complex, the end-user APIs are reduced to an extremely simple interface
  • Getting the Grail
    • To achieve the grail of extreme simplicity
      • “Simple things should be simple, complex things should be possible”
    • Use-at-will architecture
      • You shouldn’t be forced into buying the whole pizza just for a slice
      • Use individual components (controller/model) without being forced to use everything (your own template/view)
    • Configuration-less
      • The framework should be plug-and-go, no configuration files necessary
  • Zend Framework from 10,000 feet
  • Completely PHP-5 focused
    • Requires PHP 5.0.4 or later for near future
    • Takes full advantage of the PHP exception model
    • Constants are all at the class-level
    • No functions in global namespace
    • ZE2 / SPL technologies fully utilized where it makes sense
    • Black magic __magic() functions used very sparsely
  • Preview Release
    • PR 1.2 is the latest preview release of the Framework including many immediately useful tools such as:
      • A basic MVC framework for application design
      • A PDO-based database layer
      • Feed (RSS, Atom) ingestion and manipulation
      • An HTTP client
      • Input data filtering
      • Json support for AJAX
      • PDF generation and manipulation
      • RPC / Web service support
      • And more!
    • You can either get the framework preview release or check out the latest repository version
    • Preview Release: http://framework.zend.com/
    • Repository:
    Getting Zend Framework $ svn checkout http://framework.zend.com/svn/framework/trunk
  • Installing Zend Framework
    • Installing the framework is very easy, just modify your include_path to include the library/ directory
    • From php.ini:
    • From .htaccess
    …… include_path=“.:/usr/local/lib/php:/usr/local/lib/ZendFramework” …… …… php_value include_path “.:/usr/local/lib/php:/usr/local/lib/ZendFramework” ……
  • MVC Pattern
    • MVC, or M odel V iew C ontroller pattern is a powerful technique for developing user interfaces
    • Originally was conceived for client-side GUI applications and adopted to the web
    • Zend Framework provides a simplistic MVC model
  • Example Controller
    • Note: indexAction() is declared abstract in Zend_Controller_Action, and therefore must be defined in any Action/Page controller
  • Passing Parameters
    • Beyond $_GET/$_POST you can also pass parameters to a specific controller action by appending them to the URL:
      • http://localhost/foo/dosomething/param1/value1/param2/value2
    • Parameters can be accessed from within the action by name
      • $this->_getParam(<key> [, <default value>]);
      • $this->_getAllParams();
  • Dealing with 404s
    • 404 errors are no longer the responsibility of Apache per-se, and are more likely to result in a ‘Class not found’ / ‘Method not found’ exception
    • To deal with these Zend Framework provides two methods
      • In the event of a controller not found, the IndexController::noRoute() method will be called instead
      • In the event a controller action is not defined, it is the responsibility of the controller to implement safeguards (i.e. __call() which traps bad action calls)
  • Chaining Controllers
    • Controllers can be chained together to either break business logic out into components, or to otherwise redirect the user
      • $this->_forward(<controller_name> [, <parameters>])
      • Parameters are a series of key/value pairs
      • Controller Chaining does not occur until the current action is complete, to immediately forward you must return from the current action after calling _forward()
    • Forwarding does not cause a refresh on the client, to physically refresh the browser
      • $this->_redirect(<url>);
  • Final thoughts on MVC
    • Although the pattern dictates three individual class types, they are as conceptual as functional
    • For instance a “model” or “view” isn’t absolutely necessary to gain most of the benefit of MVC
      • You can always perform queries from a controller
      • You can always print output from a controller
    • Although not necessary, they are never the less recommended
  • Input Filtering
  • Zend_InputFilter
    • Security is a primary concern in Zend Framework
    • As such, we provide facilities to clean and manage untrusted data in your applications via Zend_InputFilter and Zend_Filter
      • Provides a number of methods for filtering data against many common data types (digits, alphanumeric, alpha, phone, etc.)
  • Using Zend_InputFilter
    • With Input Filter you can both test data types and retrieve filtered data easily
    • Note, by default the source of the data and all of it’s references are destroyed when filtered
  • Zend_Mail
    • Simplifies building and sending e-mail
    • Supports MIME types and multipart e-mail
    • Supports multiple transports and persistent connections automatically
    • Supports large file attachments via the streams API improving performance
  • Sending HTML mail is now really easy
  • Zend_Search
    • PHP 5 implementation of the popular Lucene search engine from the Java world.
    • Simplified API
    • Requires no special PHP extensions
    • Fully compatible with the binary index format of Java Lucene 1.4 and above
  • Zend_Search Features
    • Ranked Searching
      • Best results always first
    • Many Query types: phrase, wildcard, proximity
    • Search by field (Author, title, body, etc.)
    • Robust, and simple API
      • One-method intelligent searches against indexes, or complex OO queries if desired
      • Index multiple document types, with different field requirements
  • Using Zend_Search
    • Using Zend Search is very easy
    • The search engine also boasts a parser for google-like searching: zend php -java
  • Adding documents to the index
  • Cool things about Zend_Search
    • The Lucene search engine allows you to index multiple document types in a single index, each with different index fields
      • Index Individual documents with different searchable criterion
      • I.e. Index code samples by functions used, while articles by title, author, and keywords in the same index
    • Because it is 100% compatible with Lucene 1.4+, it is compatible with all pre-created index files
  • Questions?