Flow is based on a dedicated file system library that provides a clear separation between reading/writing streams.
Filesystem component is available as a standalone package;
composer require flow-php/filesystem
It was inspired by a linux FStab, and similarly to it to start
using a filesystem it needs to be first mounted.
By default fstab() function registers two default filesystems:
- local native filesystem
- stdout write-only filesystem
All filesystems supports listing files and opening streams into which you can read or write data.
Listing Files
To list files use Filesystem::list(Path $path) method
which also supports glob pattern.
List method returns and generator of FileStatus objects.
Alternatively to check if a single file exists, use Filesystem::status(Path $path) : ?FileStatus
Reading Data
Reading data from a filesystem is done by opening a stream and deciding if you want to read it at once or in chunks.
Additionally, you can read a part of a file from a specific offset.
Writing Data
Writing data to a filesystem is done by opening a stream throught one of two methods:
-
appendTo(Path $path) : DestinationStream -
writeTo(Path $path) : DestinationStream
