correct syntax in my php coding

I have tried loading my php files to my web hosting server but the files have an error I cannot figure out . My files begin with <?php and end in ?> and then I changed to <? and ended with ?> but the server says there is a problem with that beginning! I don't know how to fix it. The server uses php extension mysqli version 7.4.30

Cybersecurity path
In Networking
Does Anyone know how a beginner like me in tech can start learning cyber security or starting a career in cyber engineering? […]
Build an Advanced RAG App: Query Rewriting
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In the last article, I established the basic architecture for a basic RAG app. In case you missed that, I recommend that you first read that article. That will set the base from which we can improve our RAG system. Also in that last article, I listed s... […]
Extracting YouTube Channel Statistics in Python Using YouTube Data API
In Computer Science
Are you interested in finding out what a YouTube channel mostly discusses? Do you want to analyze YouTube videos of a specific channel? If yes, we are in the same boat. YouTube video titles are a great way to determine the channel's primary focus. Plotting a word cloud or a ... […]
Contexts in Go: A Comprehensive Guide
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Contexts in Go provide a standard way to pass metadata and control signals between goroutines. They are mainly used to manage task execution time, data passing, and operation cancellation. This article covers different types of contexts in Go and examp... […]
Next-Gen Lie Detector: Stack Selection
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The first lie detector which relied on eye movement appeared in 2014. The Converus team together with Dr. John C. Kircher, Dr. David C. Raskin, and Dr. Anne Cook launched EyeDetect — a brand-new solution to detect deception quickly and accurately. This... […]