PHP

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Submitted by Himani Kathal

• Power Point Presentation
• on
• Topic PHP

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What is PHP?

• PHP is an acronym for "PHP Hypertext
  Preprocessor"
• PHP is a script on the server side used for the
  creation of Static or Dynamic Web sites or Web
  applications.
• PHP is a pre-processor for hypertext, which used
  to stand for home pages. 
• The software used to build web applications is an
  open source, server-side, scripting language.
• PHP can be inserted into HTML.
• PHP scripts are executed on the server
• PHP is free to download and use

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What are the uses of PHP?

• PHP can generate dynamic page content.
• PHP can create, open, read, write, delete, and
  close files on the server.
• PHP can collect form data.
• PHP can add, delete, modify data in your
  database.
• PHP can be used to control user-access.
• PHP can encrypt data.

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What can PHP do?

• Generate dynamic web pages.
• Collect form data from the web page.
• Send or receive cookies.
• And, anything which any other CGI (Common Gateway
  Interface) programming language can do.
• There are three main fields where these scripts
  are used
• Server Side Scripting 
• This is the traditional purpose of why it is
  built used, for generating dynamic content. For
  this, you need a PHP Parser, a web server, and a
  web browser.

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• Command line Scripting 
• This is where PHP acts as just any other
  scripting language wherein you can run your PHP
  scripts using a PHP Parser.
• Client-side GUI 
• This is where you can build application
  software (with GUIs) using PHP-GTK. It is not the
  best-fit language for the purpose though.

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What are the characteristics of PHP?

• It is simple and easy to use.
• It is efficient and able to connect the database
  and load the application faster.
• It provides more security to the web application
  with help of using PHP frameworks.
• It is more familiar for the developers and online
  support is being provided for the beginners.
• It shows flexibility and ability to get
  integrated with another programming language.
• It is open source and free of cost.

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What are the applications based on PHP?

• Web-based applications and development of web
  pages
• E-commerce websites and applications.
• Data Analytics and Representation
• Processing of Images.
• Graphical User interface design based
  applications.
• Developing the features of Flash
• Graphic designing.
• School and college websites.
• Small video games.

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What are the advantages of PHP?

• The most important advantage of PHP is that it is
  open source and free of cost. It can be
  downloaded anywhere and readily available to use
  for the development of web applications.
• It is platform independent. PHP based
  applications can run on any operating system like
  UNIX, Linux and windows, etc.
• The PHP based application can easily be loaded
  and connected to the database.
• It helps in managing the code easily.

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What are the disadvantages of PHP?

• It is not that secure because of its open-source,
  as the source code can be easily available.
• It is not suitable for large content-based web
  applications.
• It has a weak type, which may lead to incorrect
  data and information to the user.
• PHP frameworks need to learn to use the PHP
  built-in functionalities to avoid writing
  additional code.
• PHP do not allow the change or modification in
  core behavior of the web applications.
• The PHP frameworks are not the same in
  behavior so does their performance and features.

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How PHP works?
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• Example
• lt!DOCTYPE htmlgt
• lthtmlgt
• ltbodygt
• lt? php
• echo Hello World!
• ?gt
• lt/bodygt
• lt/htmlgt
• Output
• Hello World!

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• A Php script starts with 
• lt?php and ends with ?gt
• The default file extension for PHP files is
  ".php".
• CODE
• lt?php // PHP code goes here ?gt

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Thank you