How to use Composer to create an autoloader for each library separately?

Question

Composer

My library includes several third-party ones. Composer creates an autoloader for all libraries, but I need it for each one individually. they will be optional.

Answer 1

Composer is a convenient wrapper over spl-autoload-register()
php.net/manual/en/function.spl-autoload-register.php are
actually read from disk into memory, only actually used.
those. it works out of the box just the way you want it.