Composer自动加载几个路径作为一个命名空间

Question

I have this folders structure:

core/
core/db/
core/db/beans

I have classes with namespace AAA\Core\DataBase; in the core/db/ and in core/db/beans.

In my composer.json file I have:

"autoload": {
        "psr-4": {
            "AAA\\Core\\": "core/",
            "AAA\\Core\\DataBase\\": "core/db/"
        }
    }

After that I can use classes from core/ folder with use AAA\Core\DataBase\ClassName; but can't from core/db/beans. I received "Fatal error: Class not found". How can I add few folders to the same namespace? Is it possible?

Answer 1

As PSR-4 standard goes:

When loading a file that corresponds to a fully qualified class name

1. A contiguous series of one or more leading namespace and sub-namespace names, not including the leading namespace separator, in the fully qualified class name (a "namespace prefix") corresponds to at least one "base directory".
2. The contiguous sub-namespace names after the "namespace prefix" correspond to a subdirectory within a "base directory", in which the namespace separators represent directory separators. The subdirectory name MUST match the case of the sub-namespace names.

Therefore, your namespaces must correspond with your folder structure.

PSR-4 Standard