TalkPHP - View Single Post - can anyone explains this snippet in the pagination?

medicalboy · 03-27-2011, 07:35 PM

this is a part of a class of aguestbook with pagination

but i can't understand well this mathematical procedure as i am anewbie

Code:

var $itemsPerPage = 5;
  $page = isset($_GET['page']) ? $_GET['page'] : 1;

$startItem = ($page-1)*$this->itemsPerPage;
if (($startItem + $this->itemsPerPage) > sizeof($list)) $endItem = sizeof($list);
else $endItem = $startItem + $this->itemsPerPage;

can anyone explains this in detail?,and i'll be appreciated.........
whay the start item is as like that?
and this if coded like that?

03-27-2011, 07:35 PM	#1 (permalink)
medicalboy The Visitor Join Date: Mar 2011 Posts: 1 Thanks: 0	can anyone explains this snippet in the pagination? this is a part of a class of aguestbook with pagination but i can't understand well this mathematical procedure as i am anewbie Code: var $itemsPerPage = 5; $page = isset($_GET['page']) ? $_GET['page'] : 1; $startItem = ($page-1)*$this->itemsPerPage; if (($startItem + $this->itemsPerPage) > sizeof($list)) $endItem = sizeof($list); else $endItem = $startItem + $this->itemsPerPage; can anyone explains this in detail?,and i'll be appreciated......... whay the start item is as like that? and this if coded like that?