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

Try this:

 $cookie = isset($_COOKIE['cookie'])?$_COOKIE['cookie']:'';
 //checks if there is a cookie, if not then an empty string