MySQL/PHP - page number pagination Only show 10 pages at times - php

Question

I am having difficulties with my MYSQL / PHP dashboard. - Currently i am having 50 pages, but currently they are all showing on the same page.
http://imgur.com/wDfTWUa - as you can see in the attached file. - I only want 10 pages to be shown, and be able to click through the rest of the pages without seeing 4 rows of pages.
Exsampel <- 2 3 4 5 6 7 8 9 10 -> when you are on ?page=1, if you are on page ?page=10 <- 11 12 13 14 15 16 17 18 19->
Hope you can help me.
Code:
<?php
include 'config.php';
$sidenr = $_GET['page'];
$sidenr2 = ($sidenr -1) * 10;
echo $sidenr2;
echo "<br><br>";
$query100 = mysqli_query($conn, "SELECT * FROM `test` LIMIT $sidenr2,10") or die(mysqli_error($conn));
while($row = mysqli_fetch_array($query100))
{
echo $row['id']."<br>";
}
$result = mysqli_query($conn, "SELECT * FROM test");
$num_rows = mysqli_num_rows($result);
$sideantal = $num_rows / 10;
echo "Der skal være antal sider: ". $sideantal;
echo "<br><br>antal rækker ". $num_rows . "<br><br>";
?>
<br><br>
<?php
for ($number = 1; $number <= $sideantal; $number++) {
echo "<li><a href=\"test.php?page=".$number."\" >". $number. "</a></li>";
}
?>

Answer 1

function getPageRange($current, $max, $total_pages = 10) {
$desired_pages = $max < $total_pages ? $max : $total_pages;
$middle = ceil($desired_pages/2);
if ($current <= $middle){
return [1, $desired_pages];
}
if ($current > $middle && $current <= ($max - $middle)) {
return [
$current - $middle,
$current + $middle
];
}
if ($current <= $max ) {
return [
$current - ($desired_pages - 1),
$max
];
}
}
list($min,$max) = getPageRange($sidenr, $sideantal);
foreach (range($min, $max) as $number) {
echo "<li><a href=\"test.php?page=".$number."\" >". $number. "</a></li>";
}

Answer 2

try to change this:
for ($number = 1; $number <= $sideantal; $number++) {
echo "<li><a href=\"test.php?page=".$number."\" >". $number. "</a>
</li>";
}
to this:
for ($number = 1; $number <= $sideantal; $number++) {
if (($number > $_GET['page']) && ($number <= $_GET['page'] + 10)) {
echo "<li><a href=\"test.php?page=".$number."\" >". $number. "</a>
</li>";
}
}

Answer 3

You can try the following code:
for ($number = 1; $number <= $sideantal; $number++) {
/** If the loop count is greater than the current page but less than current page plus 10 */
if ( ($number > $_GET['page'] && ($number < ($_GET['page'] + 10)))) $is_valid = true;
/** If the loop count is less than the current page but greater than current page -10 and the current page is the last page */
if ($number < $_GET['page'] && $_GET['page'] == $sideantal && $number > ($_GET['page'] - 10)) $is_valid = true;
else $is_valid = false;
if ($is_valid) {
echo "<li><a href=\"test.php?page=".$number."\" >". $number. "</a></li>";
}
}