For instance, executing a database query in PHP or Python, should not be slower nor faster than any other language. It is up to the database server.
Other than that, both (the original) PHP and Python implementations come with extensions written in C/C++ code, so comparing the speed of PHP and Python is just comparing how fast the commands that access that C/C++ code run. So you are not really comparing PHP and Python.
Ofcourse we always try to find ease which is not in using our own brain so Computers are better but the fact is that Computer is invention of Human Brain so Human Brain is more prior than Computers. Now we are so used to technology and computers that we don't like to use our own brain even for the smallest calculation .
C# on visual Studio because .NET is the best to learn as its a complete package if one could simplify its complex codes and logic . It covers both online and offline projects . I find its connectivity to database (SQL server ) is very simple .It is something really worthy .
Web developers write pages using HTML and CSS, strictly speaking they are not programming languages. And Web programmer is Someone who uses backend server languages, like ASP, PHP, Ruby, etc, to write the logic for a web application