php/WP_CLI/FileCache.php
protected function prepare_write( $key ) {
		if ( ! $this->enabled ) {
			return false;
		}

		$filename = $this->filename( $key );

		if ( ! $this->ensure_dir_exists( dirname( $filename ) ) ) {
			return false;
		}

		return $filename;
	}
protected function prepare_write( $key ) {
		if ( ! $this->enabled ) {
			return false;
		}

		$filename = $this->filename( $key );

		if ( ! $this->ensure_dir_exists( dirname( $filename ) ) ) {
			return false;
		}

		return $filename;
	}
protected function prepare_write ( $ key ) { if ( ! $ this -> enabled ) { return false ; } $ filename = $ this -> filename ( $ key ) ; if ( ! $ this -> ensure_dir_exists ( dirname ( $ filename ) ) ) { return false ; } return $ filename ; }
Prepare cache write

@param string $key cache key
@return bool|string filename or false
Prepare cache write