If you want the Class Name without the Namespace or if you've got here because basename() returns a dot (.) for the FQCN (Fully Qualified Class Name), here is the solution:
<?php
// FQCN: App\Http\Controllers\CustomerReportController
substr(self::class, (int)strrpos(self::class, '\\') + 1)
// returns: CustomerReportController
?>