新聞財經娛樂♬資訊 News Economy

I have done my created huge math function such as order 20 of polynomial/regression function with 10,000 data input in PHP program.
After math calculation is done , I will echo out the output
to the client browser. Since the function is huge almost
costing it  15 seconds to finish, I want to replace the math
function by other languages.

Recently, I heard javascript on server-side, Node.js,  so  
I know javascript is much easy to use as PHP coding , and I check
its speed is much faster than PHP as C

So now I try to make desicion on switch programming Lanauge on Javascript
or C or C++

But C or C++ is really time consuming to get to know everything such as
its complicated pointer structure or its sytnax

How do you think about using Javascript to do huge math function instead of
using C or C++ ?

And what is major different between C and C++ in doing huge math function ?

Or other lanaguage could handle huge math function code with good code and speed, please point it out ?

Please advise

Duncan

Perhaps you should also consider a PHP cross compiler like HipHop (http://en.wikipedia.org/wiki/HipHop_for_PHP) that converts PHP code into C/C++. Facebook created that to solve their performance issues. It may not be as efficient as hand-coded C/C++ stuff but still worth looking.

There are several cross-compilers actually.

C and C++ are essentially identical when it comes to mathematical processing - C++ is an extension to the C language to provide object orientation and other extensions.

It will be faster but if you are interacting with a browser you are going to have to write it so that it can interact with the web server (using CGI or as an extension).

As far as I know node.js is a framework for writing server side code - it may be useful for your purposes but javascript is the language there - node.js is just the framework.

One option is to write the heavy stuff in C - have the script kick that off - which writes to a file. When complete the script reads the file and returns the results to the browser.

You're talking about two different programming paradigms. Javascript is a scripting language that is intended to be run by a host; C and C++ are compiled languages which can be built into standalone executables. By default, C and C++ will run faster than Javascript since they are compiled directly into machine code (i.e. code that runs on the processor). For complicated match functions, I would expect that C and C++ will offer better performance, unless of course you can find a Javascript compiler. (Perhaps one exists, but I haven't heard of it. Perhaps someone else can speak to its existence.)