What is a Cookie

A cookie is a small piece of data that a website stores on your device (like your computer or smartphone) when you visit it. Cookies are used to remember information about you to improve your browsing experience.

There are different types of cookies, but here are the main purposes they serve:

• Session Management: Keeping you logged in, remembering your shopping cart contents, etc.
• Personalization: Storing your preferences like language or theme.
• Tracking and Analytics: Monitoring your behavior on a site to improve performance or for advertising purposes.

Create Cookies With PHP

Syntax

setcookie(name, value, expire, path, domain, secure, httponly);

Only the name parameter is required. All other parameters are optional.

$cookie_name = "admin";
$cookie_value = "cookie";
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), "/"); // 86400 = 1 day 

 if(!isset($_COOKIE[$cookie_name])) {
  echo "Cookie named '" . $cookie_name . "' is not set!";
} else {
  echo "Cookie '" . $cookie_name . "' is set!
";
  echo "Value is: " . $_COOKIE[$cookie_name];
}

Delete a Cookie

To delete a cookie, use the setcookie() function with an expiration date in the past:

// set the expiration date to one hour ago
setcookie("admin", "", time() - 3600);

echo "Cookie 'user' is deleted.";
?>