Why we create cookies ?

cookie is used to identify any user. A cookie is known as a very small file that the server copy into the user's computer browser. Whenever users request a web page using the same computer , it will send the cookie too.

With PHP, We can create and retrieve cookie values.

For creating cookie. setcookie() function is called.

<?php
$cookie_name = "Username";
$cookie_value = "David Marker";
setcookie($cookie_Username, $cookie_value, time() + (86400 * 30), "/"); // 86400 = 1 day // used to create the cookies
?>

For retreiving any cookie we can write the code=

<?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];
}
?>