How to do I properly send variables using pagination? - php

Question

I currently am having trouble using pagination. The first page is great, and the display on the second and third pages are correct, but the actual $_Get variables are not being carried over onto the second page and third page. Where would I put the actual $_Get Variables to go onto the next pages? Also I am using a form to pass the variables as a hidden input, that again work on the first page, but revert to empty on the second and third pages. I have read about decoupling and using sessions, but have tried implementing session variables at the top to no avail. How would I get the session to go to the second and third page. Thank you!
session_start();
include "dbhReal.inc.php";
include "header.php";
$timeSelected = $_GET['time'];
$dateSelected = $_GET['date'];
$ShownDate = date('M-d-y', strtotime("$dateSelected"));
$Null = '00:00:00';
<!--Form is below, left out the queries for space sake-->
echo '
<div class="col-sm-6">
<div class="card h-100">
<img class="card-img-top" src="../PhotoUploads/uploads/'.$userPic['Link1'].'" height="350" width="400" alt="anotherOne"/>
<div class="card-body">
<h5 class="card-title">'.$row['firstNameP'].' '.$row['lastNameP'].'</h5>
<p class="card-text">'.$row['briefDescription'].'</p>
<form action="settingTheSession.php" method="GET">
<input type="hidden" name="time" value='.$timeSelected.'>
<input type="hidden" name="date" value='.$dateSelected.'>
<input type="hidden" name="idNumber" value='.$boookingNumber.'>
<button type="submit" class="btn btn-primary" name="buttonBookprofileSearch">See Profile</button>
</form>
</div>
</div>
</div>';
<!--Pagnation-->
<ul class="pagination justify-content-center">
<li class="page-item" <?php if($page_no <= 1){ echo "class='page-item disabled'"; } ?>>
<a class='page-link' <?php if($page_no > 1){ echo "href='?page_no=$previous_page'"; } ?>>Previous</a>
</li>
<?php
if ($total_no_of_pages <= 10){
for ($counter = 1; $counter <= $total_no_of_pages; $counter++){
if ($counter == $page_no) {
echo "<li class='page-item active'><a class='page-link'>$counter</a></li>";
}else{
echo "<li class='page-item'><a class='page-link' href='?page_no=$counter'>$counter</a></li>";
}
}
}
elseif($total_no_of_pages > 10){
if($page_no <= 4) {
for ($counter = 1; $counter < 8; $counter++){
if ($counter == $page_no) {
echo "<li class='page-item active'><a class='page-link'>$counter</a></li>";
}else{
echo "<li class='page-item' ><a class='page-link' href='?page_no=$counter'>$counter</a></li>";
}
}
echo "<li class='page-item'><a>...</a></li>";
echo "<li class='page-item'><a class='page-link' href='?page_no=$second_last'>$second_last</a></li>";
echo "<li class='page-item'><a class='page-link' href='?page_no=$total_no_of_pages'>$total_no_of_pages</a></li>";
}
elseif($page_no > 4 && $page_no < $total_no_of_pages - 4) {
echo "<li class='page-item'><a class='page-link' href='?page_no=1'>1</a></li>";
echo "<li class='page-item'><a class='page-link' href='?page_no=2'>2</a></li>";
echo "<li class='page-item'><a class='page-link'>...</a></li>";
for ($counter = $page_no - $adjacents; $counter <= $page_no + $adjacents; $counter++) {
if ($counter == $page_no) {
echo "<li class='page-item active'><a class='page-link'counter</a></li>";
}else{
echo "<li class='page-item'><a class='page-link' href='?page_no=$counter'>$counter</a></li>";
}
}
echo "<li class='page-item'><a class='page-link'>...</a></li>";
echo "<li class='page-item'><a class='page-link' href='?page_no=$second_last'>$second_last</a></li>";
echo "<li class='page-item'><a class='page-link' href='?page_no=$total_no_of_pages'>$total_no_of_pages</a></li>";
}
else {
echo "<li class='page-item'><a class='page-link' href='?page_no=1'>1</a></li>";
echo "<li class='page-item'><a class='page-link' href='?page_no=2'>2</a></li>";
echo "<li class='page-item'><a class='page-link'>...</a></li>";
for ($counter = $total_no_of_pages - 6; $counter <= $total_no_of_pages; $counter++) {
if ($counter == $page_no) {
echo "<li class='page-item active'><a class='page-link'>$counter</a></li>";
}else{
echo "<li class='page-item'><a class='page-link' href='?page_no=$counter'>$counter</a></li>";
}
}
}
}
?>
<li class="page-item" <?php if($page_no >= $total_no_of_pages){ echo "class='disabled'"; } ?>>
<a class="page-link" <?php if($page_no < $total_no_of_pages) { echo "href='?page_no=$next_page'"; } ?>>Next</a>
</li>
<?php if($page_no < $total_no_of_pages){
echo "<li class='page-item'><a class='page-link' href='?page_no=$total_no_of_pages'>Last ››</a></li>";
} ?>
</ul>
<div class="text-center">
<strong>Page <?php echo $page_no." of ".$total_no_of_pages; ?></strong></div>
<br />

Answer 1

At first try not to reinvent the wheel. There are a lot of packages out there which deal with pagination: https://packagist.org/packages/voku/pagination?query=pagination
Secondly, considering your question, as PHP is server side you need to pass the needed data to every page/url you navigate.
So like the following example from your code:
echo "<li class='page-item'><a class='page-link' href='?page_no=1'>1</a></li>";
You will need the add the wanted arguments to the href query string. Like you are already doing with the 'page_no' parameter.
echo "<li class='page-item'><a class='page-link' href='?page_no=1&date=". $dateSelected ."'>1</a></li>";
In that manner you will have access to the wanted arguments on the next pages.