spl_autoload Default implementation for __autoload() &reftitle.description; voidspl_autoload stringclass_name stringfile_extensionsspl_autoload_extensions() 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 function will be used for any later call to __autoload. &reftitle.parameters; class_name The lowercased name of the class (and namespace) being instantiated. file_extensions 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. &reftitle.returnvalues; &return.void;