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Overview
Web Development Trends What is PHP ? MVC Frameworks Mobile Web Apps Command Line PHP Sites Using PHP Pros Cons References
Web Development Trends
PHP Ruby (on Rails) Python (Django) ASP.NET JavaScript (Ajax, Node.js, AngularJS, Backbone.js,
Ember.js etc) Java Perl Scala (Play Framework) Erlang Clojure Groovy/Grails etc
What is PHP?
PHP is mainly focused on server-side scripting, so you can do anything any other CGI program can do, such as collect form data, generate dynamic page content, or send and receive cookies.
The best things in using PHP are that it is extremely simple for a newcomer, but offers many advanced features for a professional programmer.
PHP: Hypertext Preprocessor
Development started in 1994, by Rasmus Lerdorf. Server-side scripting language Interpreted language Multi-platform (Linux, *nix, Windows) Syntax resembles C and Perl Simpler and faster to develop in (than C and Perl
or Java) Fast, flexible and pragmatic
Where does PHP fit ?
Web Browser
Internet orIntranet
page
Web
HTTPRequest
Page
Webpage
Web
Server
server
Addedfunction
ality
Addedfunction
ality
Client-side“Active pages”
JavaScript, VBScript,
Applet, ActiveX
Server-side“Dynamic
pages”
CGI, SSI, Server API,
ASP, JSP, PHP, COM/DCOM,
CORBA
Active and dynamic page technology can be used together – server-side program generates customized active pages.
Putting it all together
Web-ClientWeb-Server
DBMS
DatabaseOutput
SQL commands
PHP
HTML-Form (+JavaScript)
Reply
WWW
SubmitData
Call PHPinterpreter
Response Response
LAN
Web-Browser
DatabaseServer
PHP – MVC Frameworks
Model-View-Controller (MVC)YiiCakePHPCodeIgniterSymfonyZend FrameworkKohanamany others
PHP – Mobile Web Apps
Common to use server-side PHP to develop Mobile Web Apps or Hybrid Apps Reuse php web site backend components and logic Enjoy the advantages of PHP
Eg. PHP Yii Framework + jQuery Mobile (or any mobile web app framework)
Command Line PHP
What is this good for: Parsing files to put into a database Ideal for scripts regularly executed using cron (on
*nix or Linux) or Task Scheduler (on Windows). Anything you use a shell script or perl script to do
Variables of use: $argc, $argv[] $stdin, $stdout, $stderr
Sites using PHP
Yahoo, Facebook, Google, YouTube, eBay, Flickr, Zynga, Wikipedia, Craiglist, Digg
Cisco, Oracle, Intel, Nokia, China Mobile, Wordpress sites (CMS), Drupal sites (CMS) etc
PHP - Pros
Open source, completely free Specifically designed for Web Development /
Developers Excellent documentation Simplicity, Easy to learn, including frameworks Largest community support Multi-platforms Easy deployment (just copy the files) Easy to scale up and out Readily available pool of talents/coders
PHP - Pros
Rapid prototyping, fast development time Lightweight, low overheads Fast execution time Silo process, loosely coupled Highly configurable Procedural / Object Oriented programming Extensive libraries / modules Support wide range of interfaces (DB, Outputs,
Protocols, Caching etc)
PHP - Cons
Best used with caching stack Not thread-safe Less efficient multithreading support No strong standards of coding style Flexible, many ways to accomplished same task Not strongly typed, implicit conversion Not particularly sexy No built-in scheduler Not good for GUI or desktop apps
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