this seems like very simple maths but somehow, my brain cant think …
i am trying to implement pagination and will need to calculate the item offset to use in limiting my result set. i am having problems calculating what index the first item of the page should have.
eg.
with 1 page having 10 items
page 1 will have items 1 - 10
page 2 ............... 11 - 20
page 3 ............... 21 - 30
i thought of
offset = page * itemsPerPage + 1
but this will not be the case for page 1. there must be a formula for this? am using PHP/Zend_Paginator/Doctrine2 but this should be language independent
wonder if this should be in the the maths stack exchange site
Use
offset = (page - 1) * itemsPerPage + 1.