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What is filesystem?

symfony/filesystem — explained in plain English

Analysis updated 2026-06-26

4,646PHPAudience · developerComplexity · 2/5LicenseSetup · easy

In one sentence

A PHP utility library for reliably creating, copying, moving, and deleting files and directories, with clear exceptions when something goes wrong instead of unpredictable native PHP behavior.

Mindmap

mindmap
  root((Symfony Filesystem))
    What it does
      File and directory ops
      Clear exception handling
      Consistent behavior
    Operations
      Create files and dirs
      Copy and move
      Rename and delete
    Usage
      Standalone via Composer
      Inside Symfony framework
    Audience
      PHP developers
      Any PHP project
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Code map

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filefunction / class

What do people build with it?

USE CASE 1

Add reliable file and directory operations to any PHP project without dealing with inconsistent native PHP function behavior.

USE CASE 2

Use as a standalone Composer package to handle file creation, copying, moving, and deletion with proper exception handling.

What is it built with?

PHPComposerSymfony

How does it compare?

symfony/filesystemkimai/kimainunomaduro/collision
Stars4,6464,6464,649
LanguagePHPPHPPHP
Setup difficultyeasymoderateeasy
Complexity2/53/52/5
Audiencedeveloperpm founderdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · easy Time to first run · 5min
Use freely in any project including commercial use under the MIT license terms.

So what is it?

This is the Filesystem component from the Symfony PHP framework. It provides a collection of utility functions for working with files and directories, covering operations like creating, copying, moving, renaming, and deleting them. The component is designed to handle these tasks in a consistent way that raises clear exceptions when something goes wrong, rather than relying on the more unpredictable behavior of raw PHP file functions. The package is designed to work either as part of the full Symfony framework or as a standalone library in any PHP project. Developers who need reliable file-handling helpers outside of Symfony can pull it in via Composer, the standard PHP dependency manager. This repository is a read-only split of the file-system component from the main Symfony repository. Code changes and pull requests for this component go to the parent Symfony project rather than here. Bug reports and feature requests also go to the central Symfony issue tracker. Like other Symfony components, this package follows Symfony's versioning and long-term support schedule. It has a wide install base because Symfony is one of the most commonly used PHP frameworks, and many other PHP packages list this component as a dependency for their own file-handling needs. The README for this component is very short. It states the component's purpose and links out to the official documentation for full usage details, a contributing guide, and the parent repository for issue tracking. The README itself reveals nothing about specific methods or parameters, those details live in the documentation site.

Copy-paste prompts

Prompt 1
Using the Symfony Filesystem component, write PHP code to copy a directory recursively and throw a clear exception if the source does not exist.
Prompt 2
How do I use the Symfony Filesystem component to safely create a nested directory structure and write a file to it?
Prompt 3
Show me how to install the Symfony Filesystem component via Composer and use mkdir() and remove() in a plain PHP script.

Frequently asked questions

What is filesystem?

A PHP utility library for reliably creating, copying, moving, and deleting files and directories, with clear exceptions when something goes wrong instead of unpredictable native PHP behavior.

What language is filesystem written in?

Mainly PHP. The stack also includes PHP, Composer, Symfony.

What license does filesystem use?

Use freely in any project including commercial use under the MIT license terms.

How hard is filesystem to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is filesystem for?

Mainly developer.

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