PHP Training in Pune

1
What is PHP

• PHP Hypertext Preprocessor (or simply PHP) is a
  server-side scripting language designed for web
  development but also used as a general-purpose
  programming language. It was originally created
  by Rasmus Lerdorf in 1994,the PHP reference
  implementation is now produced by The PHP Group
• PHP originally stood for Personal Home Page but
  it now stands for the recursive acronym PHP
  Hypertext Preprocess

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2
PHP USAGE

• PHP is a general-purpose scripting language that
  is especially suited to server-side web
  development where PHP generally runs on a web
  server.
• PHP code in a requested file is executed by the
  PHP runtime, usually to create dynamic web page
  content.
• PHP is also used for command-line scripting and
  client-side GUI applications. PHP can be deployed
  on most web servers, many operating systems and
  platforms, and can be used with many relational
  database management systems.

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3
A Small Sample Code

• lthtmlgt
• ltheadgt
• lttitlegt PHP Test lt/titlegt
• lt/headgt
• ltbodygt
• lt?php
• echo "Hello World"
• ?gt
• lt/bodygt
• lt/htmlgt

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4
OUTPUT

• Here the output is Hello World.
• PHP only parses code within its delimiters.
  Anything outside its delimiters is sent directly
  to the output and is not processed by PHP.
• The most common delimiters are
• lt?php to open and ?gt
• ltscript language"php"gt
• lt/scriptgt
• lt? (which is used to echo back a string or
  variable) and ?gt
• lt or lt and gt

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5
DATA TYPES

• PHP stores whole numbers in a platform-dependent
  range.
• This range is typically that of 32-bit signed
  integers. Unsigned integers are converted to
  signed values in certain situations.
• Arrays can contain elements of any type that
  handle in PHP .
• Including resources, objects, and even other
  arrays.
• PHP also supports strings, which can be used with
  single quotes, double quotes, or heredoc syntax.

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6
RESOURCES

• PHP includes free and open source libraries.
• PHP is a fundamentally Internet-aware system.
• Many database servers, embedded SQL libraries
  such as embedded PostgreSQL, MySQL and SQLite,
  LDAP servers, and others.
• PHP allows developers to write extensions in C to
  add functionality to the PHP language.
• These can be compiled into PHP or loaded
  dynamically at runtime.

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7
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