How to compile c,c++ and java programs in my website using PHP

Hi,

I am planning to develp a website where the users will be submitting their code and I need a system that checks if the submitted code gives the correct output. How can I do so? Can I use the system() and exec() functions? Or do i need to follow any other method? Is it advisable to use any CMS for this requirement?

Thanks in advance,
ssk

 

Found this:

stackoverflow. com/questions/929592/how-can-i-compile-c-c-code-in-php-on-the-windows-platform

 

Thanks Sterlings