[kh99]

Originally Posted by mohammad6006

vbdate('Y-m-d', lastactivity) work out of the query

for example if I fetch query and store in variable like: $visitor[lastactivity] and then
vbdate('Y-m-d', $visitor[lastactivity]) was working

my problem is that i can not use it in the query

You would either have to figure out how to use FROM_UNIXTIME() in the query, or else write a loop to read each row from the user table, use vbdate to convert, then do a separate INSERT for each.

I forgot that vbdate handles the timezone conversion based on a user's selecte timezone. Do you want the times to be converted for each user's timezone, or just for your own?