Improve API

[hansott]

Currently it's kind of a PITA to set custom properties for cookies...

e.g. you want to set a normal cookie with SameSite specified (or maybe combined with a expires in)

Goals:

• You can set individual parameters (with immutable API)
• There are multiple ways to define time component: expires at, expires in, seconds valid, ... (This also needs to be testable, so a clock as dependency would be nice)
• You cannot create an invalid cookie
• It just works!
• The current methods are preserved for backwards compat

[Chi-teck]

That's not an issue in PHP 8 anymore.

$cookie = new SetCookie('foo', 'bar', httpOnly: true);