PHP pagination class

PHP pagination class

PHP pagination class for displaying database results in pages

 

<?
classpagination
{
public function __construct()
{
}
public function calculate_pages($total_rows, $rows_per_page, $page_num)
{
$arr = array();
// calculate last page
$last_page = ceil($total_rows / $rows_per_page);
// make sure we are within limits
$page_num = (int) $page_num;
if ($page_num < 1)
{
$page_num = 1;
}
elseif ($page_num >
$last_page)
{
$page_num = $last_page;
}
$upto = ($page_num - 1) * $rows_per_page;
$arr['limit'] = 'LIMIT '.$upto.',' .$rows_per_page;
$arr['current'] = $page_num;
if ($page_num == 1)
$arr['previous'] = $page_num;
else
$arr['previous'] = $page_num - 1;
if ($page_num == $last_page)
$arr['next'] = $last_page;
else
$arr['next'] = $page_num + 1;
$arr['last'] = $last_page;
$arr['info'] = 'Page ('.$page_num.' of '.$last_page.')';
$arr['pages'] = $this->get_surrounding_pages($page_num, $last_page, $arr['next']);
return $arr;
}
function get_surrounding_pages($page_num, $last_page, $next)
{
$arr = array();
$show = 5; // how many boxes
// at first
if ($page_num == 1)
{
// case of 1 page only
if ($next == $page_num) return array(1);
for ($i = 0; $i < $show; $i++)
{
if ($i == $last_page) break;
array_push($arr, $i + 1);
}
return $arr;
}
// at last
if ($page_num == $last_page)
{
$start = $last_page - $show;
if ($start < 1) $start = 0;
for ($i = $start; $i < $last_page; $i++)
{
array_push($arr, $i + 1);
}
return $arr;
}
// at middle
$start = $page_num - $show;
if ($start < 1) $start = 0;
for ($i = $start; $i < $page_num; $i++)
‚ÄČ {
array_push($arr, $i + 1);
}
for ($i = ($page_num + 1); $i < ($page_num + $show); $i++)
{
if ($i == ($last_page + 1)) break;
array_push($arr, $i);
}
return $arr;
}
}
?>

 

Usage

Simple and raw. No theory, plain code. This is it, PHP pagination class, one of the most wanted snippets for web applications.

How to use it:

Instantiate the class (PHP5 version):

$p = new pagination();

Run the first query to select the number of total rows and call the first function,

with arguments the total rows number, how many rows to show per page and current page number:

$arr = $p->calculate_pages(70, 10, 1);

This function will call the second one in the class to get the surrounding pages of the page

we are requesting.

The returned result should look like this:

Array
(
[limit] => LIMIT 0,10
[current] => 1
[previous] => 1
[next] => 2
[last] => 7
[info] => Page (1 of 7)
[pages] => Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
)
)

 

Thanks

http://phpsnaps.com/snaps/view/php-pagination-class/#close

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