$_COOKIE
HTTP Cookies
ENTITY
An associative array of variables passed to the current script via HTTP Cookies.
array
$_COOKIE example
<?php echo 'Hello ' . htmlspecialchars($_COOKIE["name"]) . '!'; ?>
Assuming the "name" cookie has been set earlier
Hello Hannes!
ENTITY ENTITY
setcookie, Handling external variables, The filter extension
setcookie