If you want your code to be compatible with PSR-4, you MUST have your names in format classname.php.
From the PSR-4 specification:
The final class name matches the name of the file ending in .php. The file name MUST match the case of the trailing class name.
( http://www.php-fig.org/psr/psr-4/ )
So, if you stick to PSR-4, then the answer is that you cannot use your file names .class.php. Just change the file names and the problem will be solved.
- , , . ( , PSR-4, )