How to use where condition in pagination using php? - php

Question

I have a problem in my code, my pagination is not working when i navigate link its generate notice error undefined index: package name.
here is my code :
include("includes/header.php");
include('php_script/db.php');
$package_name = $_GET['package_name'];
if (isset($_GET['pageno'])) {
$pageno = $_GET['pageno'];
} else {
$pageno = 1;
}
$no_of_records_per_page = 1;
$offset = ($pageno-1) * $no_of_records_per_page;
$result = mysqli_query($con,$total_pages_sql);
$total_rows = mysqli_fetch_array($result)[0];
$total_pages = ceil($total_rows / $no_of_records_per_page);
$sql = "select * from tour_package where package_name
='".$package_name."'
order by id desc LIMIT $offset, $no_of_records_per_page ";
$res_data = mysqli_query($con,$sql);
Here is pagination link :
<ul class="pagination">
<li>First</li>
<li class="<?php if($pageno <= 1){ echo 'disabled'; } ?>">
<a href="<?php if($pageno <= 1){ echo '#'; } else { echo "?pageno=".
($pageno - 1); } ?>">Prev</a> </li>
<li class="<?php if($pageno >= $total_pages){ echo 'disabled'; } ?>">
<a href="<?php if($pageno >= $total_pages){ echo '#'; } else { echo "?
pageno=".($pageno + 1); } ?>">Next</a></li>
<li>Last</li>
</ul>

Answer 1

Try this
<?php
include("includes/header.php");
include('php_script/db.php');
if(isset($_GET['package_name'])){
$package_name = $_GET['package_name'];
$_SESSION['package_name']=$package_name; //First time when you have package_name in url then assign this in session
}
if(isset($_SESSION['package_name'])){
$package_name = $_SESSION['package_name']; //Other times when you have not package_name in url then use this by session
}
if (isset($_GET['pageno'])) {
$pageno = $_GET['pageno'];
} else {
$pageno = 1;
}
$no_of_records_per_page = 1;
$offset = ($pageno-1) * $no_of_records_per_page;
$result = mysqli_query($con,$total_pages_sql);
$total_rows = mysqli_fetch_array($result)[0];
$total_pages = ceil($total_rows / $no_of_records_per_page);
if(isset($package_name)){ // check if you have package_name variable then your query will run
$sql = "select * from tour_package where package_name
='".$package_name."'
order by id desc LIMIT $offset, $no_of_records_per_page ";
$res_data = mysqli_query($con,$sql);
}
?>