Calling Any PHP Programmers

If you know PHP, I could use your help. I've got some code that's not functioning as expected. I am attempting to break some data extracted from MySQL into three sections. The relevant segment of code is below:

function Row1() {
$Part = ceil(($this->Articles()->Count()) / 3);
return DataObject::get("ArticlePage", "", "", "", "0, $Part");
}
function Row2() {
$Part = ceil(($this->Articles()->Count()) / 3);
$Part2 = floor(($Part * 2));
return DataObject::get("ArticlePage", "", "", "", "$Part, $Part2");
}
function Row3() {
$Total = ($this->Articles()->Count()) ;
$Part = ceil(($Total / 3)); $Break = ceil(($Part * 2));
return DataObject::get("ArticlePage", "", "", "", "$Break, $Total");
}
}

Row 1 displays the first third of the results. Row 3 displays the last third of the results. Row 2, however, is displaying the second third all the way to the end.

Example: Let's say there are 6 items.

Row 1
Item 1
Item 2
Row 2
Item 3
Item 4
Item 5
Item 6
Row3
Item 5
Item 6

Click Here to see the actual output.

Any ideas why it's breaking down like that? The calculation for $Part2 should be correct since it's the same as $Break and Row 3 is starting in the correct place. I'm not a PHP programmer so I can only assume the last parameter in the Get statement indicates "start, end"

I would also like to alphebetize the list but I haven't even started on that yet.

UPDATE: I figured out what my problem was. I was assuming that the last parameter meant starting record number, ending record number when in actuality it means starting record number, number of records to display. It works now!