This document provides an overview of PHP, including its history, usage, syntax, frameworks, and more. PHP was created in 1994 by Rasmus Lerdorf as a general purpose scripting language especially suited for server-side web development. It allows developers to embed PHP code into HTML files to produce dynamic web pages. Major updates included support for object oriented programming, XML, and improved performance. PHP is a popular open source language used by over 240 million websites.

2. Vincent Pontier aka Elroubio – Creator Of elePHPant
PHP mascot

3. THREE-TIERED WEB SITE:
WAMP/LAMP

4. SERVER SIDE TECHNIQUES
• PHP
• Java EE: Servlet, JSP
• .NET
• CGI / Perl (Very old)
• Ruby
• …

5. HISTORY
PHP (PHP: Hypertext Preprocessor) was created by Rasmus Lerdorf in 1994. It was initially
developed for HTTP usage logging and server-side form generation in Unix.
PHP 2 (1995) transformed the language into a Server-side embedded scripting language. Added
database support, file uploads, variables, arrays, recursive functions, conditionals, iteration, regular
expressions, etc.
PHP 3 (1998) added support for ODBC data sources, multiple platform support, email protocols
(SNMP,IMAP), and new parser written by Zeev Suraski and Andi Gutmans .
PHP 4 (2000) became an independent component of the web server for added efficiency. The
parser was renamed the Zend Engine. Many security features were added.
PHP 5 (2004) adds Zend Engine II with object oriented programming, robust XML support using the
libxml2 library, SOAP extension for interoperability with Web Services, SQLite has been bundled
with PHP
PHP 6 and Unicode(2005) lacking native Unicode support at the core language level
PHP 7(2015) (PHP next generation), which aims at optimizing PHP performance by refactoring the
Zend Engine while retaining near-complete language compatibility.

6. WHAT IS PHP?
• PHP is a scripting language that was originally designed for
web development to produce dynamic webpages.
• For this purpose, PHP code is embedded into HTML
• PHP originally stood for ”PERSONAL HOME PAGE” - now -
Hypertext Preprocessor
• Installed on more than 240 million websites
• Cost-effective, Scope for Customization, Faster, Preferred
over others

7. 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.

8. 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 then be compiled into PHP or loaded dynamically at
runtime.

9. PHP SYNTAX

10. PHP KEYWORDS

11. PHP TAG

12. PROGRAM

13. DEVELOPMENT ENVIRONMENT

14. WHITESPACE & COMMENTS

15. ECHO VS PRINT

16. SINGLE (‘) VS DOUBLE (“) QUOTES

17. OPERATORS

18. ARITHMETIC
OPERATORS

19. COMPARISON OPERATORS

20. LOGICAL OPERATORS

21. COMBINATION OPERATORS

22. OPERATOR PRECEDENCE

23. CONTROLLING THE
FLOW

26. REPEATING CODE

28. ARRAYS

29. INDEXED ARRAYS

30. ASSOCIATIVE
ARRAYS

31. FUNCTION

32. RETURN FROM FUNCTION

33. CODE REUSE

34. FUNCTION

35. PHP FRAMEWORKS

43. INFORMATION
• Usual file extensions .php, .phtml .php5 .phps
• Paradigm imperative, object-oriented
• Appeared in : 1995[1]
• Designed by : Rasmus Lerdorf
• Developer :The PHP Group
• Typing discipline Dynamic, weak
• Major implementations Zend Engine, Roadsend PHP, Phalanger,
Quercus, Project Zero, HipHop
• Influenced by C, Perl, Java, C++, Tcl[1]
• Influenced PHP4Delphi
• Programming language : C
• OS : Cross-platform
• License : PHP License
• Website : http://www.php.net

44. THANK YOU
amitpatil@whitecode.co.in