> You can create whole web app in one PHP file from scratch and it will have everything including API and DB management layer and be secure and fully functioning.
You can. But I shudder to imagine one file containing everything you just said. Also, I'm skeptical about the security claim. I'm not talking about PHP-specific vulnerabilities here. Rather, the developer of such an app might be pretty naive, and might build in his own vulnerabilities.
> And it will work on all servers and on all operating systems.
The same is true of most mainstream languages. Ruby, Python, Java, and Node are probably the big competitors in the web dev space. All of them can run on Windows.
You can. But I shudder to imagine one file containing everything you just said. Also, I'm skeptical about the security claim. I'm not talking about PHP-specific vulnerabilities here. Rather, the developer of such an app might be pretty naive, and might build in his own vulnerabilities.
> And it will work on all servers and on all operating systems.
The same is true of most mainstream languages. Ruby, Python, Java, and Node are probably the big competitors in the web dev space. All of them can run on Windows.