PHP Session: $_SESSION is just like a memory area which use
for storing data about site visitors. In $_SESSION if you want to store
information about visitor on your site then you can use this Global Array in
PHP Programming. $_SESSION stored a unique ID each visitor online. It is
variable is used to store information about, or change settings for user
session. Session variable hold information about single user. Session information is temporary and will be
deleting after the user has left the website. If you can use the session in PHP
then you can call it with session_start( ) at the begin of the PHP script.
Program
<html>
<form method="post">
Username :<input type="text"
name="username"/>
Password :<input
type="password" name="email"/>
<input name="Submit"
type="submit" value="Submit"/>
</form>
</html>
<?php
session_start();
$_SESSION['username']= $_POST['username'];
$_SESSION['email']= $_POST['email'];
echo "Username
:".$_SESSION['username']."<BR>";
echo " password ".
$_SESSION['email'];
?>
Here Video Tutorial
PHP
Cookies: A Cookie is an item of data that web servers save to your
computer hard disk via a web browser. It can contain almost any alphanumeric
information and can be retrieved from your computer and returned to the server.
Common uses include session tracking, maintaining data across multiple visits
holding shopping cart content store login details and more.
Cookies have some important security features:
·
A Cookie can only be read by the web site or
domain that created it.
·
A Single cookie cannot exceed 4 kilobytes in
size.
·
A single domain cannot set more than 20 cookies.
·
The maximum number of cookies that may be set on
a user system is 300.
The setcookie( ) is used to set a cookie. And setcookie( )
must use before the <html>tag.
Syntax: setcookie(name, value, expire, path, domain);
Cookies some parameters
·
Name – the
name of cookie
·
Value – the
value of cookie and cookie’s contents.
·
Expire- it is
the time set to expire the cookies.
·
Path- the
path of the cookie on the server .
·
Domain- the
Internet domain of the cookies.
Program
<?php
$expire= time( )+60*60*24*30;
setcookie("username",
"amandeep" , $expire);
?>
To retrieve the cookie using
the $_COOKIE variable
<?php
echo
$_COOKIE["username"];
print_r($_COOKIE);
?>
Here Video Tutorial
