BP_Attachment::create_dir()

	public function create_dir() {
		// Bail if no specific base dir is set.
		if ( empty( $this->base_dir ) ) {
			return false;
		}

		// Check if upload path already exists.
		if ( ! is_dir( $this->upload_path ) ) {

			// If path does not exist, attempt to create it.
			if ( ! wp_mkdir_p( $this->upload_path ) ) {
				return false;
			}
		}

		// Directory exists.
		return true;
	}