Singular Value Decomposition (SVD) in PHP

Question

I would like to implement Singular Value Decomposition (SVD) in PHP. I know that there are several external libraries which could do this for me. But I have two questions co

Answer 1

Regarding question 1: It definitely is possible. Whether it's reasonable depends on your scenario: How big are your matrices? How often do you intend to run the code? Is it run in a web site or from the command line? If you do care about speed, I would suggest writing a simple extension that wraps calls to the GNU Scientific Library.