Is there a good PHP library for vectors and matrices? [closed]

Answer 1

There is

• http://pear.php.net/package/Math_Matrix and
• http://pear.php.net/package/Math_Vector/

and a number of other related PEAR packages about Math

• http://pear.php.net/search.php?q=math&in=packages&x=0&y=0&p=1

I do not know if they suit your needs though. See for yourself.