自动加载 PSR-4 特定类

Question

I have autoload setup via PSR-4 which works perfectly fine. However I want to be able to add a specific class on top of that, that I can access from anywhere in the application.

This is what I have currently:

    "autoload": {
       "psr-4": {
          "App\\": "app"
         }
     }

However I want to add a class called 'Redis' which is located in app/Lib/Redis.php so that from any Controller I can call Redis::method(); without having to add 'use App\\Lib\\Redis;' to the top of each file.

Is this possible?

Answer 1

This can't be done directly.

You could create a global function redis() and register than with composer:

"autoload": {
    "psr-4": {
        "App\\": "app"
    },
    "files"" {
        "app/functions.php",
    }
}

If this redis() function returned an instance of your Redis class, then I think that you could then do:

redis()->method();

Whether you should do this or not is another matter - unit testing becomes highly problematic . Personally, I would have a use statement and inject an instance of the Redis object into the constructors of the classes that need it.