Php “preview” and “next” - php

Question

I have a code what generated a list for number of pages, but I want to replace them with two buttons “preview” and “next”
Code is:
$results = mysqli_query($connecDB,"SELECT COUNT(*) FROM list");
$get_total_rows = mysqli_fetch_array($results); //total records
//break total records into pages
$pages = ceil($get_total_rows[0]/$item_per_page);
//create pagination
if($pages > 1)
{
$pagination = '';
$pagination .= '<ul class="paginate">';
for($i = 1; $i<$pages; $i++)
{
$pagination .= '<li>'.$i.'</li>';
}
$pagination .= '</ul>';
}

Answer 1

You'll need a var to know the current page, like:
$page = ($_GET['page']) ? (int)$_GET['page'] : 1;
if($pages > 1)
{
$pagination = '';
$pagination .= '<ul class="paginate">';
$pagination .= '<li>previous</li>';
for($i = 1; $i<$pages; $i++)
{
$pagination .= '<li>'.$i.'</li>';
}
$pagination .= '<li>next</li>';
$pagination .= '</ul>';
}

Answer 2

I would use current page with php get but if you are doing where javascript is progressing the pages here is an example.
You will have to modify since I can not see the javascript you are using
You can use jquery
<?php
$results = mysqli_query($connecDB,"SELECT COUNT(*) FROM list");
$get_total_rows = mysqli_fetch_array($results); //total records
//break total records into pages
$pages = ceil($get_total_rows[0]/$item_per_page);
?>
<ul class="paginate">
<script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript">
$(function() {
var hash = $(location).attr('hash');
hash = hash.substring(1, hash.length); // Remove #
var pages = <?php echo $pages; ?>;
var content = '';
if(hash > 1 && hash <= pages)
content += '<li>previous</li>';
if(hash >= 1 && hash < pages)
content += '<li>next</li>';
$('.paginate').html(content);
});
</script>
</ul>