Convert Session Data to a PHP Include

ntsmedia

Perhaps someone can help with this, I'm stuck!

I have the following piece of PHP code that grabs data (URLs and Link Titles) from session data. As written, the echo statement outputs something like the following as a list:

Link One (url link is http://www.somesite.com/Link01/ )
Link Two (url link is http://www.somesite.com/Link02/ )
Link Three (url link is http://www.somesite.com/Link03/ )

The starting point code is:

<?php 
function comp($a, $b)
{
if ($a['link_url'] == $b['link_url']) {
return 0;
}
return ($a['link_url'] < $b['link_url']) ? -1 : 1;
}
if ($_SESSION['_am_links'])
{
usort($_SESSION['_am_links'],'comp');
foreach ($_SESSION['_am_links'] as $link_id => $link)
{
echo "<li><a href=\"".$link['link_url']."\">".$link['link_title']."</a></li>";
}
}
?>

This code works but I am trying to revise it so that the url's ('link_url") are sorted and only the highest (in an ahpa sort - /Link03/ in this case) is used to to make a PHP include with the domain portion removed and ".php" added. The desired output would be:

<?php include("Link03.php"); ?>

If the data set went up to "Link08" then the result returned would be:

<?php include("Link08.php"); ?>

Any help would be GREATLY appreciated!
Many Thanks
John

laserlight

It sounds easy enough, but what is the exact format of $SESSION['am_links']?

bretticus

Let me just say, it is always a bad idea to write and execute dynamic php code. Especially, when it comes from a source that can be manipulated (such as session data. think shared host.)

I'll just assume that you meant your code will be something like this:

<?php
define('URL_TO_EXCLUDE', 'http://www.somesite.com/');

function comp($a, $b)
{
	if ($a['link_url'] == $b['link_url']) {
		return 0;
	}
	return ($a['link_url'] < $b['link_url']) ? -1 : 1;
}

if ($_SESSION['_am_links'])
{

usort($_SESSION['_am_links'], 'comp');
$path = str_replace( URL_TO_EXCLUDE, '', end($_SESSION['_am_links']) ) . '.php';
if ( file_exists($path) )
	include($path);
}
?>

That may not be the optimal way to do this, just for illustrative purposes (untested.)

ntsmedia

Thanks for the fast replies!

Aside from knowing what the output is from the starting point script, I'm not sure of the exact format of $SESSION['am_links'] ... what would be the best way to determine this?
Certainly understand (at least in basic concept) the concerns mentioned with dynamic code. This would only operate within a protected area though and until I'm able to work out a better way, using the session data seems to be the only source of the data I need to make sure the user sees the correct content.

Your code looks right-on but isn't yet working. I didn't want to over-complicate my post but the code is to operate in a WordPress page with the exec-php plugin. Perhaps that is complicating things though the "starting code" I gave does work. It's giving an error of:

Parse error: parse error, unexpected ‘{’ in ... eval()’d code on line 8

Regards
John

laserlight

ntsmedia wrote:
1. Aside from knowing what the output is from the starting point script, I'm not sure of the exact format of $SESSION['am_links'] ... what would be the best way to determine this?

Use [man]print_r/man, though it would be best to read the WordPress (or the plugin's) developer documentation (or even code, if the documentation is lacking) to be sure.