PHP switch - default if the variable is not set

Question

is there any way to simplify this code to avoid the need for an if to skip to the switch's default value?

I have a configuration table for different authentication methods for a http request, with an option not to set the value to default to a plain http request:

if(!isset($type)) {
    $type = "default";
}

switch ($type) {
   case "oauth":
       #instantinate an oauth class here
       break;
   case "http":
       #instantinate http auth class here
       break;
   default:
       #do an unprotected http request
       break;
}

I have no issue with the functionality, but I would like a cleaner solution to switch on an optional variable, is there any way to achieve that? Thanks!

Answer 1

You don't need to set the variable to "default". The default-case will be executed if the variable is not set or has any different value from all other defined cases. But remember: if the variable is not set and you use it in the switch, you will get a notice "Notice: Undefined variable". So if you don't want to disable notices you have to do the check if the variable is set.

Answer 2

Just

switch ($type??'') {
    case "oauth":
        #instantinate an oauth class here
        break;
    case "http":
        #instantinate http auth class here
        break;
    default:
        #do an unprotected http request
        break;    
}

is enough on php >= 7