php

Govt. Engineering College
AJMER

A training presentation on :
PHP with MySql
Submitted to : Submitted By :
Mr. Vinesh Jain Ajeet Kr. Jhajharia
09CS04

Content :
 Company Profile
 History of php
 What is php ?
 Features of php
 php code look like
 Php Contents
 Advantage of php
 MySql

CEG : Center for Electronic
Governance

CEG is an autonomous body of the Govt. of
Rajasthan under the department of technical
Education.
Foundation stone of CEG was laid down on 8th
December 2006 at Khaitan Polytechnic College
Jaipur by Shri Ghanshyam Tiwari and Shri
Vasudev Devnani, Hon’ble Ministers for
Technical Education.

History of php :

 Created by Rasmus Lerdorf in 1994
 Originally a set of Perl scripts used by
Lerdorf to show off his résumé.

What is php ?

 php stands for “Hypertext
PreProcessor” .
 An open source language .
 php is a server-side scripting language .
 php is used to generate dynamic web pages.
 php code can be embedded within an HTML
page.

What is php ?

 „ViewSource‟ in browsers does not
display the php code .
 phpsupports many popular databases
such as MySql , Oracle and many
more.

Features of php :

 Very Efficient :– Can serve millions of hits per day.
 Database Integration :– Supports many
databases, such as
MySql and Oracle.
 It’s Free :– Available on http://www.php.net
 Easy to Learn – Very similar in syntax to C and C++
 php uses both procedural and object oriented
paradigms.

php codes look like ?

 Each PHP script must be enclosed in the
reserved php tag .

<?php

…

?>

php Contents:

 Variables
 Constant
 Operators
 Array
 Functions

Variables :
 Variables are used for storing values, such
as
numbers, strings or function results, so that
they can be used many times
in a script.
 PHP variables must begin with a “$” sign
 Php variables are case-sensitive ($Sign!=
$sign != $siGn)
◦ Certain variable names reserved by PHP
like form variables
($_POST, $_GET), server variables

Operators :
 Arithmetic Operators (+,-,*,/)
 Example:- $total=$a+$b;

 Assignment Operators(=)
 Example:- $t=$a+$b;

 Comparison Operators (<, <=, >, >=)
 Logical Operators (&&. ||,!)

Arrays:
<?php
$arr = array("somearray" =>
array(6 => 5, 13 => 9, "a" => 42));

echo $arr["somearray"][6]; //
5
echo $arr["somearray"][13]; //
9
echo $arr["somearray"]["a"]; //
42

Functions :
 Functions must be defined before then can
be called

 Function headers are of the format

 function
functionName($arg1,$arg2,………$argn)

◦ Note that no return type is specified

Function Example:
<?php
function mul($arg1, $arg2)
{
$arg2 = $arg1 * $arg2;
return $arg2;
}
$result = mul(12, 3); // Store the
function
echo $result1; // Outputs 36
?>

Advantage of php :

 Open source
 Procedural / Object Oriented
programming
 Supports wide range of Databases
 Easy to learn
 Portable

Why MySql ?

 Most popular open-source DB
 Fast, reliable, scalable, etc.
 Integrated with common applications
 Based on SQL Standard
◦ Probably at least as compliant as other
DBs

MySQL Query Basics

 mysql_connect() :-
This function returns the connection on
success, or FALSE and an error on failure.
 mysql_select_db() :-
The mysql_select_db() function sets the
active MySQL database.

MySQL Query Basics
 mysql_query() :-
The mysql_query() function executes a query on a
MySQL database.
 mysql_num_rows() :-
The mysql_num_rows() function returns the number
of rows in a recordset.
 mysql_fetch_array() :-
The mysql_fetch_array() function returns a row from a
recordset as an associative array and/or a numeric array.

Project Snapshots

Project:

Student Information System

php

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