php - unwanted session results - php

Question

i am developing a web application,which has 3 pages.
first is index.php
which has search bar on which user searches.
second is search.php
which displays the search results like result_1,result_2,result_3 with info(title,description,url) when user click on any result it send the user to final page i.e show.php
and third page is show.php
on which info is displayed for the result which user has clicked.
for eg(corresponding url content will be displayed using iframe)
i tried using two dimensional session array,which is working not correctly.
when user click on any result,some other result's info is displaying on show.php
i check the session array content by print_r,it had unnecessary content.
someone help me in this i am sharing my code snippet.
search.php
<?php
session_start();
$id = 1;
while($row = mysqli_fetch_array($sql))
{
$title = $row['title'];
$description = $row['description'];
$url = $row['content_url'];
$icon = $row['thumb_icon_url'];
$_SESSION['result'][] = Array('title' => $title,'description'=> $description,'content_url' => $url,'icon' => $icon,'id'=> $id);
?>
<li name="id" >View doc</li>
<?php
$id++;
?>
show.php
<?php
if(isset($_GET['id']))
{
$id = $_GET['id'];
?>
<div>
<iframe class="embed-responsive-item item" src="<?php echo $_SESSION['result'][$id]['content_url'];?>"></iframe>
</div>
when i tried to check $_SESSION['result'] i got this
this array should have contain only query results.Help me to fix it

Answer 1

you're not setting the key of your array:
$_SESSION['result'] = Array();
$_SESSION['result'][$id] = Array('title' => $title,'description'=> $description,'content_url' => $url,'icon' => $icon,'id'=> $id);
add session_start(); in your show.php

Answer 2

If I understand correctly, your problem is that you have unwanted results.
This is basically because your are always adding results to the $_SESSION['results'] across all your queries.
Every time that you run search.php you will keep adding items to $_SESSION['result'], breaking the correspondence of the $id and the position of the array.
I would initialize the $_SESSION['result']
<?php
session_start();
$id = 1;
$_SESSION['results'] = [];
while($row = mysqli_fetch_array($sql)){
//...
}