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Laravel
Laravel is a web application framework with expressive, elegant syntax. We’ve already laid the foundation for your next big idea — freeing you to create without sweating the small things.
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Directus
The Modern Data Stack 🐰 — Directus is an instant REST+GraphQL API and intuitive no-code data collaboration app for any SQL database.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Nothing wrong with still using your existing knowledge. Laravel is a fantastic framework for PHP and will let you dabble in some of the new frontend stacks if you want (Vue, React, or just their flavour of PHP templates) while still feeling familiar: https://laravel.com/
Take a look at https://directus.io/ - it may offer most of what you want already out-of-the-box and you can just expand your world from there :)