Passing variables from PHP page within an iframe, to another?

Question

So it's probably best to explain my project. The index.php page contains two iframes, one of which links to business.php which displays a BBC RSS feed. The second is meant to display the individual link for each article. So if one were to click on an individual title link in business.php; instead of being taken to that BBC page in that iframe, it actually creates a variable which is transferred back to index.php, then used as the source for the second iframe... I hope this makes sense, i'm currently attempting to use the SESSION function.

index.php

<?php
 if(!isset($_SESSION)) 
            { 
                session_start(); 
            } 
?>

<html>
<head>
    <link rel="stylesheet" type="text/css" href="style.css" /> 
</head>

<body>
<table>
    <col width="15%">
    <col width="42.5%">
    <col width="42.5%">
    <tr>
        <td id="bar">
            Rob's Edition

<ul>            
    <li><a href="index.php?$newsfeed='feeds/business.php'">Business</a></li>
    <li><a href="index.php?$newsfeed='feeds/technology.php'">Technology</a></li>
</ul>
        </td>

<td id="feed">



            <?php

            $newsfeed = "feeds/default.php";

            if (isset($_GET['$newsfeed'])) {
                $_SESSION['$newsfeed'] = $_GET['$newsfeed'];
            }
            echo isset($_SESSION['$newsfeed']) ? "<iframe src={$_SESSION['$newsfeed']} style='border:none' width='100%' height='100%' overflow-y='hidden' color='white'></iframe>" : 'Please choose a topic<br />';  

    ?>

    <td id='frame'> 
            <?php



            //echo isset($_SESSION['$framelink']) ? "<iframe src={$_SESSION['$framelink']} style='border:none' width='100%' height='100%' overflow-y='hidden' color='white'></iframe>" : 'Please choose a topic<br />';  



        echo ($_SESSION['$framelink']);
    ?>     
    </td>  

</body>
</html>

business.php

<?php
 if(!isset($_SESSION)) 
            { 
                session_start(); 
            } 

$framelink = ""
?>

<html>
<head>
    <link rel="stylesheet" type="text/css" href="style.css" /> 
</head>

<body>

<div>
<?php
$rss = simplexml_load_file('http://feeds.bbci.co.uk/news/business/rss.xml?edition=uk'); //BBC Business RSS Feed
$feed1 = "<h1>" . $rss->channel->title . "</h1>" . '<hr>'; //Title of feed 

foreach ($rss->channel->item as $item) {


    $framelink = $item->link;
    $feed1 .= '<h2><a href="business.php?' . $framelink . '">' . $item->title . '</a></h2>'; //Title of article
    $feed1 .=$item->description; //Description of article


}
?>


<?php
if (isset($_GET['$framelink'])) {
                $_SESSION['$framelink'] = $_GET['$framelink'];
            }

echo $feed1; 

?>
</div>
</body>
</html>

@Dagon I used an iframe for business.php as i wanted a scrollable feed whilst the index.php remained fixed. As i'm new to php that seemed the easiest option. Do you have a way to display php with a scroll bar instead? — Rob Warneck, Jan 14 '16 at 20:39
http://stackoverflow.com/questions/9707397/making-a-div-vertically-scrollable-using-css read this to learn how to use div for scroll bar. — jewelhuq, Jan 14 '16 at 22:23

Passing variables from PHP page within an iframe, to another?

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