pagination display when more number of pages - php

Question

I am using simple pagination with following code.
But I want to show 1 2 3 ..... 10 11 12 type pagination.
When more number of pages are there, pagination should be adjusted accordingly.
My current simple pagination php code is :
<?php
if (isset($_GET["start"])){
$start = $db->filter($_GET["start"]);
}
if(empty($start)){
$start= 0;
}
$maxrecords = 10;
$pagination_query = "select * from table order by id desc";
$pagination_count = $db->num_rows($pagination_query);
$query = "select * from table order by id desc limit $start,$maxrecords"; // For record to display...
$result = $db->get_results($query);
?>
<div class="pagination">
<?php
for($i=0;$i<ceil($pagination_count/$maxrecords);$i++){
if($start==$i*$maxrecords){
?>
<a class='active'> <?php print $i+1;?></a>
<?php }else{ ?>
<?php print $i+1;?>
<?php
}
}
?>
</div>
<!-- Rest code to display records goes here -->
Now this code is working rightly...
Only thing is it is showing paginatin - 1 2 3 4 5 6 7 like unlimited depending upon total records in database...
I want to convert it to 1 2 3 .... 22 23 24 etc...
Your valuable help appreciated...

Answer 1

My answer begins by some notes about what I'm seeing about pagers.
Then, this answer doesn't provide the "expected result" you want, but I think it could be more "flexible".
I think your query to get the number of record seems to be expensive. You could just use a count(*) :
$pagination_query = "select count(*) as num from table order by id desc" ;
$pagination_count = $db->get_field_result() ; // I don't know your DB API.
I think your query to get the current results seems to doesn't take care about the $start and $maxrecords (but I don't known your database API) :
$query = "select * from table order by id desc limit ".($start*$maxrecords).",$maxrecords"; // range 0+10, 10+10, 20+10, ...
You could use several loops to display begining pages, "around current", and ending pages.
Here is a "sample" code, not perfect, but it could helps you to imaging your own pager.
$start = 7 ; // try with 1, 7, 24, 75...
$pagination_count = 40 ; // Number of results
$maxrecords = 10 ;
$num_pages = ceil($pagination_count / $maxrecords) ;
// echo "num_pages=$num_pages\n" ; // Just for dev
if ($start > $num_pages) { $start = $num_pages; }
if ($num_pages < 6) {
for ($i = 0; $i < $num_pages ; $i++) {
echo render_page_link($i, $start);
}
}
else {
// Begining
for ($i = 0 ; $i < min(3, $num_pages); $i++) {
echo render_page_link($i,$start) ;
}
echo ' (...) ' ;
$have_middle = ($start > 3 && $start <= $num_pages - 3) ;
if ($have_middle) {
// Around current
for ($i = max(3, $start - 3); $i < min($start + 3 - 1, $num_pages - 3) ; $i++) {
echo render_page_link($i,$start) ;
}
}
// Ending
if ($have_middle) echo ' (...) ' ;
for ($i = $num_pages - 3; $i < $num_pages ; $i++) {
echo render_page_link($i,$start);
}
}
echo "\n"; // just because I test on CLI.
// Here is a little function to display the link:
// Currently just "plain text", but could be <a> or <span> with CSS...
function render_page_link($index, $current = -1)
{
if ($index != $current - 1) return ($index+1) . " " ;
return "[".($index+1)."] " ;
}
Example result for 1 to 24 pages
[1] 2 3 (...) 22 23 24
1 [2] 3 (...) 22 23 24
1 2 [3] (...) 22 23 24
1 2 3 (...) [4] 5 6 (...) 22 23 24
1 2 3 (...) 4 [5] 6 7 (...) 22 23 24
1 2 3 (...) 4 5 [6] 7 8 (...) 22 23 24
1 2 3 (...) 5 6 [7] 8 9 (...) 22 23 24
1 2 3 (...) 6 7 [8] 9 10 (...) 22 23 24
1 2 3 (...) 7 8 [9] 10 11 (...) 22 23 24
1 2 3 (...) 8 9 [10] 11 12 (...) 22 23 24
1 2 3 (...) 9 10 [11] 12 13 (...) 22 23 24
1 2 3 (...) 10 11 [12] 13 14 (...) 22 23 24
1 2 3 (...) 11 12 [13] 14 15 (...) 22 23 24
1 2 3 (...) 12 13 [14] 15 16 (...) 22 23 24
1 2 3 (...) 13 14 [15] 16 17 (...) 22 23 24
1 2 3 (...) 14 15 [16] 17 18 (...) 22 23 24
1 2 3 (...) 15 16 [17] 18 19 (...) 22 23 24
1 2 3 (...) 16 17 [18] 19 20 (...) 22 23 24
1 2 3 (...) 17 18 [19] 20 21 (...) 22 23 24
1 2 3 (...) 18 19 [20] 21 (...) 22 23 24
1 2 3 (...) 19 20 [21] (...) 22 23 24
1 2 3 (...) [22] 23 24
1 2 3 (...) 22 [23] 24
1 2 3 (...) 22 23 [24]