1.

What is a cookie? Write the PHP code to set a cookie named “car” and value “BMW”. The cookie should expire after two days. Also Display the value stored in $_COOKIE.

Answer»

A cookie is a small piece of data that the web server sends to a web browser so that the web server can keep track of user‟s activity on a particular website.

When a user uses a computer to visit a website, the website stores some basic information about the visit on the hard disk of the computer. It records the user‟s preferences while using the site. This stored information is called a "cookie".

<?php 

$cookie_name = "car"; 

$cookie_value = "BMW"; 

setcookie($cookie_name, $cookie_value, time() + (86400 * 2), "/"); // 86400 = 1 day ?> 

<html> 

<body> 

<?php 

if(!isset($_COOKIE[$cookie_name])) { 

echo "Cookie named '" . $cookie_name . "' is not set!"; 

} else { 

echo "Cookie '" . $cookie_name . "' is set!<br>"; 

echo "Value is: " . $_COOKIE[$cookie_name]; 

}

?> 

</body> 

</html>


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