Introduction to php 3

PC Technology Private Limited
Introduction to PHP/MySQL

What have we done ?
 HTML Basic Formatting Tags
 Form Elements
 Input Types and Buttons
 Overview on how to run a PHP Application on
Server
 A Simple PHP Application
 GET and POST Methods
 Print the data of the Forms
 Difference between Echo and Print

What next ?
 Information on Formatting and Coloring
 DIV’s and SPAN’s
 Commenting in PHP
 PHP Case Senstivity
 Variable Declaration
 Rules for Declaring a variable in PHP
 Performing Operations

Formatting and Colors
 A HTML element has a default style for colors
 (background color is white and text color is black).
 HTML Style Attibute
 style="property : value“ // CSS Values
 Set a color for the background
 <body style="background-color:lightgrey">
 Setting a color for the Text
 <h1 style="color:blue">This is a heading</h1>
 Setting a text size
 <p style="font-size:160%">This is a paragraph.</p>

Comments in PHP
 It is not executed by the program
 It is just for the reference of the developer
 Ways to write a comment
 Single Line Comments
 //
 #
 Multiple Line Comment
 /* _______ */

PHP Case Sensitivity
 Is PHP really case sensitive ?
 No !!
 All classes, functions, keywords and user defined
functions are not case sensitive
 HOWEVER, Variable names are case sensitive
 $hello is different from $Hello

Variables in PHP
 There is no command to declare a variable
 The Declaration of a variable is done by
preceding a “ $ “ sign in front of the desired
variable name
 $name
 $add
 Normal Syntax follows : Strings should be
declared in quotes, numbers without quotes
 Variables are used to store and manipulate the
data.

Rules for declaring a variable
 Variable names are case-sensitive ($age and
$AGE are two different variables)
 A variable name cannot start with a number
 A variable name should starts with the $ sign,
followed by the desired name of the variable
 It is mandatory to start a variable name with a
letter or an underscore character
 A variable name can only contain alpha-numeric
characters and underscores (A-z, 0-9, and _ )

Perform Mathematical
Operations
 Five Mathematical Operations
 Addition ( + )
 Subtraction ( - )
 Multiplication ( * )
 Division ( / )
 Modulus ( % )
 Declaration
 $a + $b;
 $c = $a + $b;

That’s all Folks !!
QUERIES ??

Introduction to php 3

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Viewers also liked

Viewers also liked (20)

Similar to Introduction to php 3

Similar to Introduction to php 3 (20)

Recently uploaded

Recently uploaded (20)

Introduction to php 3