System requirements - celtic-project/LTI-PHP GitHub Wiki

This class library is written for PHP 8.1+ (use version 4 for PHP 5.6+). It includes native support for MySQLi, SQL Server, Oracle, PostgreSQL and PDO database connections, but others can be used by writing an override to the DataConnector\DataConnector class. It has a dependency on the firebase/php-jwt library to handle JWTs but also has native support for the Web Token JWT Framework library which can be used by assigning it in your code.

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Jwt\Jwt::setJwtClient(new Jwt\WebTokenClient());
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Other JWT libraries can be used by writing a new Jwt\ClientInterface. Contributions of additional JWT client interfaces are welcomed.