How I count how many minutes a visitor stay on my website a

[lse123]

PHP5:
How I count how many minutes a visitor stay on my website a visit ? session vars must be used ? I must count time of lifetime a session var has (session set and unset) ? how this ?

[make-fun]

You could try this: http://piwik.org/ it's based on JS, so not bulletproof but has other advantages…