how would i go about working out the duration of a visitor on a page?

step 1 - i'm using a javascript img call on a website to a php script on a different server which records the event (page hit) + runs a timer to time page duration visit.

step 2 - i have also setup a javascript pageunload events which trigger a different php script to write to the db the total time spent by customer on the page when the page is closed or left. the issue i have here is how do i know / keep this customers last insert id after writting their visit in step 1 so i can push step 2 time spent duration variable into the correct row in the database? i tried cookies which didnt work and then sessions but this has intermediate outages / times it dosent work that well.

can anyone help with where i should be storing the last insert row id from the page hit?

cheers

this is how you can do it:

when user visits a page, record the timestamp of a visit.... like 1039743934 or something

when they move to other page, just generate current timestamp and subtract it from the previous visit and you get a time...

peace


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This is actually done/used for forums, blogs, carts; not for a single page.
Your script should first record time of login and then check if user is logged in, in 30 minutes or so, and increment the time.

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