If you are using php 8.2, run php -i | findstr "Thread Safety" to know, then look for php_redis-6.1.0-8.2-ts-vs16-x64, also check for 64 or 34 depends on your system operating system, donwload it and extract it copy php_redis.dll to your ext folder which can be found on xampp/php/ext, then past it and open your php.ini and add the extension like Eg: extension=php_redis.dll now save it and restart your xampp, everything should work. to download redis like the link redis link