Php

Content
HTML
Javascript
PHP
MySQL
XAMPP/WAMP

HTML
Hyper Text Markup Language
Developed by Tim Berners Lee in 1990
Easy to use, Easy to learn
Markup Tags tell the browser how to display the
page
A HTML file must have an extension .htm or .html

JavaScript
Developed by Netscape
Starts with <script type=“text/java
script”></script>
Easy to use, Easy to learn
Client Side Scripting

About PHP
PHP (Hypertext Preprocessor)
Dynamic Webpages
Its like ASP
Server Side Scripting
PHP starts with <?php ?> or <? ?>

Structure of PHP Program
<html>
<body>
<?php
echo “hi friends…..";
?>
</body>
</html>

PHP Basics
• SYNTAX:
PHP Basics includes:
1) CONSTANTS:
o Named with capital letters.
o Must begin with a letter or underscore .
o Cannot begin with a number.
o Case-sensitive.
Eg: define (“FAVMOVIE”, “The Life of Brian”);

2) VARIABLES:
o Prefixed with a dollar symbol.
o Type not to be specified.
o Variable name should not have spaces, dot or dashes but
underscore can be there.
o They need to be declared before adding a value to it.
Example: $s = “SR”;
3) DATATYPES:
o String
o Integer
o Boolean
o Float
o Object
o Resources

4) OPERATORS and OPERANDS:
Operands are the entities that have some values in them. The
operators are used to compare the two conditions .
5) COMMENTS:
// A comment on a single line
/* Multi-line comment */
6) DISPLAY STATEMENTS:
<?php echo "I like About" ?>
<?php print "I like About" ?>
7) ARRAYS:
It holds a string of related data.

8) CONDITIONAL STATEMENTS:
It allows our program to make choices.
9) LOOPS:
When we want the same block of code to run over & over again
in a sequence.
• while - loops through a block of code while the condition is
true.
• do...while - loops through a block of code once, and then
repeats the loop as long as a specified condition is true.
• for - loops through a block of code a specified number of
times.
• foreach - loops through a block of code for each element in
an array
10) FUNCTIONS:
A function is something that performs a specific task.

Passing Variables between pages
There are four ways to do it.
1) Passing Variables Through a URL:
Values are passed through query string.
echo “<a href=’http://localhost/2.php?favmovie=ddlj’> Click here
</a>”;
Disadvantages:
• ❑ Everyone can see the values of the variables.
• ❑ The user can change the variable value in the URL, which
can lead to inconsistency of data.

2) Passing Variables Through Session:
A Session is a temporary set of variables that exists
only until the browser has shut down.
• Every session is assigned a unique session ID,
which keeps all the current information together.
• To begin a session: session_start(). It must be
used at the beginning of every page.
3) Passing Variables Through Cookie:
Cookies are tiny bits of information stored on
Website’s visitor’s computer.
• The advantage to storing information in a cookie
versus a session is longevity.
• To set a cookie:
setcookie(name, value, expire, path, domain);

4) Passing Variables Through Forms:
• Forms allow Web site to be truly interactive.
• Forms are coded in HTML and stay in HTML.
• A form is made up of four parts:
o Opening tag line, indicated by <FORM> tag.
o Content of the form, including input fields.
 Text
 Checkbox
 Radio
 Options
 Password
o Action button(s) or images typically submit/clear
or user-defined button.
o Closing tag line, indicated with </FORM> tag.

MySql
Popular Open Source Database Server
Define Structure for storing information
We can query a database for specific
information and have a recordset returned

XAMPP/WAMP
Personal Web Server
An integration package containing a number of
useful packages that makes it easy to host
websites on various platforms

Php

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Similar to Php

Similar to Php (20)

Recently uploaded

Recently uploaded (20)

Php