How would I test if a cookie is set using php and if it's not set do nothing

Question

I\'ve tried

 $cookie = $_COOKIE[\'cookie\'];

if the cookie is not set it will give me an error

PHP ERROR
Undefined index: cook         


        

Answer 1

You can use array_key_exists for this purpose as follows:

$cookie = array_key_exists('cookie', $_COOKIE) ? $_COOKIE['cookie'] : null;