How do I read cookies in PHP?

How do I read cookies in PHP?

You can read cookies in PHP using the $_COOKIE superglobal array. For example, to access a cookie named 'user', you would use $_COOKIE['user'].

What if the cookie doesn't exist?

If the cookie doesn't exist, accessing it will return null. You can check if it exists using isset($_COOKIE['user']).

Can I set a default value if the cookie is not set?

Yes, you can use the ternary operator. For example: $user = isset($_COOKIE['user']) ? $_COOKIE['user'] : 'default_value';.

Are there any security concerns with cookies?

Yes, you should be cautious about sensitive data in cookies. Use secure flags and consider encrypting cookie values.