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

Depending on your needs.

// If not set, $cookie = NULL;
if (isset($_COOKIE['cookie'])) { $cookie = $_COOKIE['cookie']; }

or

// If not set, $cookie = '';
$cookie = (isset($_COOKIE['cookie'])) ? $_COOKIE['cookie'] : '';

or

// If not set, $cookie = false;
$cookie = (isset($_COOKIE['cookie'])) ? $_COOKIE['cookie'] : false;

References:

• isset()
• ternary operator (?)