MaxMind DB Reader C Extension

This is the C extension for MaxMind DB Reader, providing significantly faster IP lookups compared to the pure PHP implementation.

Installation (PIE - Recommended)

pie install maxmind-db/reader-ext

Prerequisites

The extension requires the libmaxminddb C library:

Ubuntu/Debian

sudo apt-get install libmaxminddb-dev

macOS

brew install libmaxminddb

Windows

See libmaxminddb installation instructions.

Documentation

See the main repository for full documentation: https://github.com/maxmind/MaxMind-DB-Reader-php

Related Packages

• maxmind-db/reader - Pure PHP implementation (no compilation needed)

Support

Please report issues at: https://github.com/maxmind/MaxMind-DB-Reader-php/issues

Copyright and License

This software is Copyright (c) 2014-2025 by MaxMind, Inc.

This is free software, licensed under the Apache License, Version 2.0.