stuck at displaying a PHP paginator - php

Question

I'm trying to create a paginator. I have created a paginator class with properties you can see below. But now I'm trying to display the paginator, but I'm completely stuck on different loops (perhaps I should just go to bed :P) and stuff.
The important properties are:
windows_size // the amount of pages visible
num_pages // the total number of pages
current_page // the currently selected page
I have the following object:
o: (Paginator)
->item_count : 295
page_size : 50
window_size : 5
num_pages : 10
current_page: 1
first_index : 50
And I want to display:
[1] 2 3 4 5 ...
Or I have:
o: (Paginator)
->item_count : 295
page_size : 50
window_size : 5
num_pages : 10
current_page: 5
first_index : 50
... 3 4 [5] 6 7...
Or I have:
o: (Paginator)
->item_count : 295
page_size : 50
window_size : 5
num_pages : 10
current_page: 9
first_index : 50
... 6 7 8 [9] 10
How would I get this to be displayed?
END RESULTS (many thanks to: Wh1T3h4Ck5!)
http://pastebin.com/2KzL1Tn6

Answer 1

Generally, it's very simple piece of code.
You can use something like this.
function myPaginator($total_items, $items_per_page, $visible_pages_pad, $active_page) {
$res = '';
if ($items_per_page > 0 && $active_page > 0 && $visible_pages_pad) {
$max_page = floor($total_items/$items_per_page);
if ($total_items % $items_per_page > 0) $max_page++;
if ($active_page <= $max_page) {
$visible_pages = $visible_pages_pad * 2 + 1;
if ($max_page <= $visible_pages) {
$minp = 1;
$maxp = $max_page;
}
else {
$minp = $active_page - $visible_pages_pad;
if ($minp < 1) $minp = 1;
$maxp = $minp + $visible_pages - 1;
if ($maxp > $max_page) {
$maxp = $max_page;
$minp = $maxp - $visible_pages + 1;
}
}
for ($i = $minp; $i <= $maxp; $i++) {
$page = $i == $active_page ? "[$i]" : $i; // create links here
$res .= "$page ";
}
$res = trim($res);
if ($minp > 1) $res = '... ' . $res; // left dots
if ($maxp < $max_page) $res .= ' ...'; // right dots
}
}
return $res == '' ? false : $res;
}
Parameters:
$total_items - total number of items in list
$items_per_page - how menu items you want on page
$visible_pages_pad - left/right padding (this value * 2 + 1 = number of paginator items)
$active_page - selected page in paginator
Result:
Function myPaginator() returns
false if something is wrong, otherwise returns string.
Limitations:
all parameters should be integers
$items_per_page > 0
$visible_pages_pad > 0
1 <= $active_page <= {TOTAL NUMBER OF PAGES}
Usage:
$total_items = 250; // total items
$items_per_page = 20; // 250/20 = 13 pages
$visible_pages_pad = 2; // 5 pages visible in paginator (2*2+1)
$active_page = 1;
echo myPaginator($total_items,$items_per_page,$visible_pages_pad,$active_page);
// output: [1] 2 3 4 5 ...
$active_page = 2;
echo myPaginator($total_items,$items_per_page,$visible_pages_pad,$active_page);
// output: 1 [2] 3 4 5 ...
$active_page = 3;
echo myPaginator($total_items,$items_per_page,$visible_pages_pad,$active_page);
// output: 1 2 [3] 4 5 ...
$active_page = 6;
echo myPaginator($total_items,$items_per_page,$visible_pages_pad,$active_page);
// output: ... 4 5 [6] 7 8 ...
$active_page = 11;
echo myPaginator($total_items,$items_per_page,$visible_pages_pad,$active_page);
// output: ... 9 10 [11] 12 13
$active_page = 12;
echo myPaginator($total_items,$items_per_page,$visible_pages_pad,$active_page);
// output: ... 9 10 11 [12] 13
$active_page = 13;
echo myPaginator($total_items,$items_per_page,$visible_pages_pad,$active_page);
// output: ... 9 10 11 12 [13]
Note: $visible_pages_pad is number of pages in paginator left/right of the active-page number.
Hope this helps...