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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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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.
Learning one, or more, frameworks is a good way to get hired in the future. If you know, and like, PHP you could give Laravel a try. It's a complete backend framework (can also be used for frontend). And then learn a frontend framework as well. I guess React is the more popular choice, but if you try Laravel, then they recommend and pair well with Vue.