Monthly Downloads: 422,055
Programming language: PHP
License: Apache License 2.0
Tags: Office     Stream     Read     Write     Excel     Spreadsheet     Xlsx     OOXML     CSV     odf     Ods     Composer Repositories     Memory     Open     Scale    
Latest version: v3.1.0

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Spout is 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).

Join the community and come discuss Spout: Gitter


Full documentation can be found at https://opensource.box.com/spout/.


  • PHP version 7.2 or higher
  • PHP extension php_zip enabled
  • PHP extension php_xmlreader enabled

Upgrade guide

Version 3 introduced new functionality but also some breaking changes. If you want to upgrade your Spout codebase from version 2 please consult the [Upgrade guide](UPGRADE-3.0.md).

Running tests

The master branch includes unit, functional and performance tests. If you just want to check that everything is working as expected, executing the unit and functional tests is enough.

  • phpunit - runs unit and functional tests
  • phpunit --group perf-tests - only runs the performance tests

For information, the performance tests take about 10 minutes to run (processing 1 million rows files is not a quick thing).

Performance tests status: Build Status


You can ask questions, submit new features ideas or discuss Spout in the chat room: Gitter

Copyright and License

Copyright 2017 Box, Inc. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

*Note that all licence references and agreements mentioned in the Spout README section above are relevant to that project's source code only.