(PHP 5 >= 5.1.2)
spl_autoload — Default implementation for __autoload()
This function is intended to be used as a default implementation for __autoload(). If nothing else is specified and spl_autoload_register() is called without any parameters then this functions will be used for any later call to __autoload().
By default it checks all include paths to contain filenames built up by the lowercase class name appended by the filename extensions .inc and .php.
Эта функция не возвращает значения после выполнения.