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Informations about the package arc2

ARC2

Latest Stable Version Total Downloads Latest Unstable Version License

ARC2 is a PHP 8.0+ library for working with RDF. It also provides a MySQL-based triplestore with SPARQL support. Older versions of PHP may work, but are not longer tested.

Test status:

Database Status
MariaDB 10.5
MariaDB 10.6
MariaDB 10.9
MariaDB 10.10
MariaDB 10.11
MySQL 5.5
MySQL 5.6
MySQL 5.7
MySQL 8.0 - incomplete! see below
MySQL 8.1 - incomplete! see below

Documentation

For the documentation, see the Wiki. To quickly get started, see the Getting started guide.

Installation

Requires PHP 8.0+.

Package available on Composer.

You should use Composer for installation:

Further information about Composer usage can be found here, for instance about autoloading ARC2 classes.

RDF triple store

SPARQL support

Please have a look into SPARQL-support.md to see which SPARQL 1.0/1.1 features are currently supported.

Known database problems

MySQL 8.0+

The following error occurs when using a REGEX function inside a SELECT query.

General error: 3995 Character set 'utf8mb3_unicode_ci' cannot be used in conjunction with 'binary' in call to regexp_like.

Internal information for developers

Please have a look here to find information about maintaining and extending ARC2 as well as our docker setup for local development.

All versions of arc2 with dependencies

PHP Build Version
Package Version
Requires ext-mbstring Version *
php Version ^8.0.0
Composer command for our command line client (download client) This client runs in each environment. You don't need a specific PHP version etc. The first 20 API calls are free. Standard composer command

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