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

Use isset to see if the cookie exists.

if(isset($_COOKIE['cookie'])){
    $cookie = $_COOKIE['cookie'];
}
else{
    // Cookie is not set
}