Retrieve and display PHP cookie value for a given user

Last update on April 16 2025 12:56:46 (UTC/GMT +8 hours)

2. Retrieve "username" Cookie

Write a PHP script to retrieve and display the value of the cookie named "username".

Sample Solution:

PHP Code :

<?php
$cookieName = "username";

if (isset($_COOKIE[$cookieName])) {
    $cookieValue = $_COOKIE[$cookieName];
    echo "Value of cookie 'username': " . $cookieValue;
} else {
    echo "Cookie 'username' not found.";
}
?>

Sample Output:

Value of cookie 'username': Gulnara Serik.

Explanation:

In the above exercise -

First we define the variable $cookieName with the name of the cookie we want to retrieve, which is "username".
Next, we use the isset() function to check if the cookie with the specified name exists in the $_COOKIE superglobal array. If it exists, we retrieve its value using $_COOKIE[$cookieName] and store it in the variable $cookieValue.
We then display the cookie value by echoing the message "Value of cookie 'username': " concatenated with $cookieValue.
If the cookie does not exist, we display the message "Cookie 'username' not found."

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to safely retrieve the cookie "username" and output its value, handling cases where it may not be set.
Write a PHP function to check if the "username" cookie exists and then display a custom greeting message.
Write a PHP program that retrieves the "username" cookie and prints its value along with the current timestamp.
Write a PHP script to retrieve the "username" cookie and compare its value with a predefined string for validation.

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Set PHP Cookie for setting username and one hour expiration.
Next: Delete a given PHP cookie.