[SOLVED] passing a $_GET variable as an array index

[matthewvanb]

About the App:

It's a Podcast management system (based with a mysql and XML database), and for the editing section of the RSS feed, I list all the titles of the podcasts on a page, and pass the array index as the URL parameter to the actual editing page.

 

What i'm trying to-do now is to use the $_GET variable thats passed and use it as the array index (for the XML) so I can grab the podcast information from that specific podcast.

 

index.php

 

<?php
$rss=simplexml_load_file('../podcastFeed.xml');
$count = 0;
foreach($rss->channel->item as $item)
{
	echo "<p><a href='edit.php?id=".$count."'>".$item->title."</p>";
	$count++;
}
?>

 

edit.php

<?php
//make sure that the $_GET[''] isn't empty
if(!isset($_GET['id']))
{
header('Location: index.php');
}
else
{
$xml_id= $_GET['id'];

        //PASS THE $xml_id as the array index
        $index = ....???


       $rss = simplexml_load_file('../podcastFeed.xml');

$title = $rss->channel->item[$index]->title;
$pubDate = $rss->channel->item[$index]->pubDate;
$author = $rss->channel->item[$index]->author;
$description = $rss->channel->item[$index]->description;
$guid = $rss->channel->item[$index]->guid;

}

 

anyone mind giving me a helping hand with this?

 

thanks!

[genericnumber1]

Why can't you just use it directly?

 

$title = $rss->channel->item[$xml_id]->title;

[matthewvanb]

opps... sorry for the mis print

 

$id = $_GET['id'];


$rss = simplexml_load_file('../podcastFeed.xml');

$title = $rss->channel->item[$id]->title;
$pubDate = $rss->channel->item[$id]->pubDate;
$author = $rss->channel->item[$id]->author;
$description = $rss->channel->item[$id]->description;
$guid = $rss->channel->item[$id]->guid;

 

even when I do that, I still get no results back...

[genericnumber1]

Ah, well I don't use simplexml, I can't help you there

[matthewvanb]

Thanks! 

[genericnumber1]

try doing var_dump($rss), it may help you see what the problem is. Also try enabling E_NOTICE, it will tell you if you're addressing a variable that isn't set.

[matthewvanb]

Here's what I got from the var_dump:

 

object(SimpleXMLElement)#1 (2) {
  ["@attributes"]=>
  array(1) {
    ["version"]=>
    string(3) "2.0"
  }
  ["channel"]=>
  object(SimpleXMLElement)#3 (7) {
    ["title"]=>
    string(27) "New Life Foursquare Podcast"
    ["link"]=>
    string(24) "http://podcasts.nlfe.org"
    ["description"]=>
    string(55) "A podcast of the weekly sermons at New Life Foursquare."
    ["lastBuildDate"]=>
    string(31) "Mon, 10 Mar 2008 11:34:25 -0700"
    ["language"]=>
    string(2) "en"
    ["image"]=>
    object(SimpleXMLElement)#4 (3) {
      ["url"]=>
      string(48) "http://podcasts.nlfe.org/images/nlfePodcast.jpeg"
      ["title"]=>
      string(27) "New Life Foursquare Podcast"
      ["link"]=>
      string(24) "http://podcasts.nlfe.org"
    }
    ["item"]=>
    array(24) {
      [0]=>
      object(SimpleXMLElement)#2 (5) {
        ["title"]=>
        string(41) "Humility: Bowing Low (Summer Focus Pt. 6)"
        ["pubDate"]=>
        string(15) "August 03, 2008"
        ["author"]=>
        string(10) "Mattie Poo"
        ["description"]=>
        string(39) "Weekly Podcast from New Life Foursquare"
        ["guid"]=>
        string(57) "http://podcasts.nlfe.org/podcastFiles/summerfocus_pt6.mp3"
      }
      ..........
    }
  }
}

 

Which is what it should look like, and it looks like my codes getting what it should... unless I need to be passing two parameters through the GET variable...

 

I tried using the E_NOTICE but got nothing back..

[genericnumber1]

edit: that's odd, try replacing $id with 0 to see if you can address it like that...

[matthewvanb]

okay I got it!

 

When passing it through the GET variable, it passed the number as a string, which the array index couldn't take, So I used the intval function then to convert that string, into the int which the array index can take, and then it works perfectly! thanks for all your help and suggestions!

[genericnumber1]

that is odd that it wouldn't convert it from a string to an int automatically, but eh, if it works glad you got it working.

[matthewvanb]

ya, one would figure.