CSSU PRESENTATION PHP Introduction

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CSSU PRESENTATIONlt?PHP - Introduction

• Milan Nankov mln030_at_aubg.bg

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TABLE OF CONTENTS

• What is PHP?
• Getting Started
• Resources
• Future Lectures

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What is PHP?

• PHP is a scripting language that is especially
  suited for creating web applications
• PHP is an Open Source language
• PHP is a cross-platform language Unix, Linux,
  Windows, Mac OS
• PHP is a server-side language
• PHP usually runs on a web server
• PHP is based on the Zend Engine

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What is PHP? - What can PHP do?

• There are three main areas where PHP scripts are
  used
• Command line scripting.
• Writing desktop applications.
• Web development.
• Generate dynamic html content
• Send/receive cookies
• Database support
• Flash animation generation
• Session management
• XML support

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What is PHP? The PHP Architecture
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What is PHP? - The Zend Engine

• Parses and executes all of your PHP files.
• Provides in-memory compilation and execution of
  PHP scripts
• Implements of all of the standard data structures
  of PHP
• Provides interface with extension modules for
  connectivity to external resources and protocols,
  such as SQL, HTTP and FTP, etc.
• Provides memory management and resource management

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What is PHP? - How does PHP work?
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What is PHP? PHP Advantages?

• Designed for the Web- Fast execution- Can
  handle heavy traffic
• Easy to Use- Enhanced productivity- Cost
  reduction
• Open source- Rapid technology advancement-
  Superior code quality
• Cross-Platform- Portable code

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What is PHP? - PHP disadvantages?

• Easy to use gt poorly written code
• New language gt constant changes
• No namespaces gt name collisions

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What is PHP? - PHP versus ASP
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What is PHP? - Popularity of PHP

• Companies using PHPYahoo!, Cisco, Worldcom,
  Vodafone, Motorola, Siemens, Ericsson, CBS,
  Unilever, Philips, Air Canada, Lufthansa,
  OnVista, Lycos Europe and Deutsche Bank.
• PHP is Installed on 22,172,983 domains
• TIOBE Programming Community Index

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Getting Started - New Features in PHP 5

• New Object Model
• New Object Features
• New Memory Manager
• Exception handling
• XML and Web Services
• New MySQLi (MySQL Improved) extension

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Getting Started - The PHP Language

• PHP borrowed much of its syntax from C and Perl
• The PHP code begins with the tag lt?php and ends
  with ?gt
• PHP statements end with a semicolon '
• Variables in PHP are prefixed by a dollar sign
  ('').
• Control structures if, else, elseif, while,
  do-while, for, foreach, break, continue, switch,
  return
• Support for Object-Oriented Programming
• Loosely Typed

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Getting Started - PHP Variables
lt?php str '5 monkeys' // string
variable num 45 // int variable flag
2.2 // float variable ////////////////////////
/// // Type juggling flag True // changes
to boolean num flag // 46 num
str // 51 ?gt
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Getting Started HTML output

• Two functions allow you to generate HTML output
  print() and echo()

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Getting Started Embedded in HTML?
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Getting Started First PHP Script

• First PHP script DEMO
• generating dynamic content

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Getting Started - PHP Classes
class CSSU private president private
vice public function SetVice(newvice)
this-gtvice newvice
function __construct(pr, vice)
this-gtpresident pr this-gtvice vice
cssu new CSSU(xxx, yyy)
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Getting Started - Including Files
lt?php // lib.php function foo() echo
(Hello, PHP!) ?gt
lt?php // index.html require(lib.php)//
include(lib.php)// require_once(lib.php) //
Include_once(lib.php) foo() ?gt
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PHP IDEs

• Zend Studio
• Nusphere PHPED
• Waterproof PHPEdit

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PHP IDEs - Zend Studio Features

• PHP Code Analysis
• Web Services Support (SOAP)
• Code Snippets
• SQL Support
• Available in multiple languages
• Embedded Internet Explorer
• Debugger
• Templates
• Code Completion

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Nusphere phpED Features

• Code templates
• Database integration
• Debugging
• Code-completion
• Code-explorer

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Nusphere phpED Features

• Code templates
• Database integration
• Debugging
• Code-completion
• Code-explorer

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Waterproof PHPEdit

• Solution Explorer / Project Manager
• Keyboard Templates
• Code Browser
• Debugger
• Code Completion
• Syntax Checker

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Resources

• WEB
• - www.php.net
• - www.zend.com
• - http//codewalkers.com/
• - http//www.hotscripts.com/PHP/
• Yahoo groups (http//groups.yahoo.com/)
• - php-gurus
• - php-list
• - php-objects

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Future Lectures

• Secure PHP programming
• Session management
• Database management
• Caching
• Exception handling
• PHP 6

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Sources

• Zend (www.zend.com)- http//www.zend.com/zend/art
  /intro.php- http//www.zend.com/zend/aboutphp.php
  
• PHP (www.php.net)- http//www.php.net/usage.php
• Tiobe (http//www.tiobe.com/tpci.htm)-
  http//www.tiobe.com/tpci.htm