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# OpenSpout
[](https://packagist.org/packages/openspout/openspout)
[](https://packagist.org/packages/openspout/openspout)
[](https://github.com/openspout/openspout/actions/workflows/ci.yml)
[](https://dashboard.stryker-mutator.io/reports/github.com/openspout/openspout/4.x)
OpenSpout is a community driven fork of `box/spout`, a PHP library to read and write spreadsheet files
(CSV, XLSX and ODS), in a fast and scalable way. Unlike other file readers or writers, it is capable of processing
very large files, while keeping the memory usage really low (less than 3MB).
## Documentation
Documentation can be found at [`docs/`](docs).
## Upgrade from `box/spout:v3` to `openspout/openspout:v3`
1. Replace `box/spout` with `openspout/openspout` in your `composer.json`
2. Replace `Box\Spout` with `OpenSpout` in your code
## Upgrade guide
Version 4 introduced new functionality but also some breaking changes. If you want to upgrade your OpenSpout codebase
please consult the [Upgrade guide](UPGRADE.md).
## Copyright and License
This is a fork of Box's Spout library: https://github.com/box/spout
Code until and directly descending from commit [`cc42c1d`](https://github.com/openspout/openspout/commit/cc42c1d29fc5d29f07caeace99bd29dbb6d7c2f8)
is copyright of _Box, Inc._ and licensed under the Apache License, Version 2.0:
https://github.com/openspout/openspout/blob/cc42c1d29fc5d29f07caeace99bd29dbb6d7c2f8/LICENSE
Code created, edited and released after the commit mentioned above
is copyright of _openspout_ Github organization and licensed under MIT License.
https://github.com/openspout/openspout/blob/main/LICENSE