php/WP_CLI/FileCache.php
public function read( $key, $ttl = null ) {
		$filename = $this->has( $key, $ttl );

		if ( $filename ) {
			return file_get_contents( $filename );
		}

		return false;
	}
public function read( $key, $ttl = null ) {
		$filename = $this->has( $key, $ttl );

		if ( $filename ) {
			return file_get_contents( $filename );
		}

		return false;
	}
public function read ( $ key , $ ttl = null ) { $ filename = $ this -> has ( $ key , $ ttl ) ; if ( $ filename ) { return file_get_contents ( $ filename ) ; } return false ; }
Read from cache file

@param string $key cache key
@param int    $ttl time to live
@return bool|string file contents or false
Read from cache file