WP_Filesystem_Direct::move() WordPress Method

	public function move( $source, $destination, $overwrite = false ) {
		if ( ! $overwrite && $this->exists( $destination ) ) {
			return false;
		}

		// Try using rename first. if that fails (for example, source is read only) try copy.
		if ( @rename( $source, $destination ) ) {
			return true;
		}

		if ( $this->copy( $source, $destination, $overwrite ) && $this->exists( $destination ) ) {
			$this->delete( $source );

			return true;
		} else {
			return false;
		}
	}