Creating Podcast XML from Drupal content

 <?php
// set the content type to XML
header("Content-type: text/xml");
 
// it likes to be echo'd for some reason...
echo '<?xml version="1.0" encoding="UTF-8"?>'."\r\n";;
?>
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0">
    <channel>
        <title>KPR Presents</title>
        <link>http://kansaspublicradio.org/kpr-news/kpr%20presents</link>
        <language>en-us</language>
        <copyright>&#x2117; &amp; &#xA9; 2015 Kansas Public Radio</copyright>
        <itunes:subtitle>Join Kay McIntyre on Kansas Public Radio&#39;s weekly talk-radio show.</itunes:subtitle>
        <itunes:author>Kansas Public Radio</itunes:author>
        <itunes:summary>KPR Presents is an opportunity to showcase high-profile, thought-provoking lectures, discussions and dialogues recorded throughout the region. There are so many fascinating people who come to this area, everyone from Supreme Court Justice Sonya Sotomayor to syndicated columnist Leonard Pitts. KPR Presents is a great way to share some of those lectures with our listeners. We have also been able to expand the program to cover a broad range of topics, including the Kansas Sesquicentennial, the National Day of Listening and the Kansas Reads program sponsored by the State Library of Kansas, just to name a few.</itunes:summary>
        <description>KPR Presents is an opportunity to showcase high-profile, thought-provoking lectures, discussions and dialogues recorded throughout the region. There are so many fascinating people who come to this area, everyone from Supreme Court Justice Sonya Sotomayor to syndicated columnist Leonard Pitts. KPR Presents is a great way to share some of those lectures with our listeners. We have also been able to expand the program to cover a broad range of topics, including the Kansas Sesquicentennial, the National Day of Listening and the Kansas Reads program sponsored by the State Library of Kansas, just to name a few.</description>
        <itunes:owner>
            <itunes:name>Kansas Public Radio</itunes:name>
            <itunes:email>kprdeveloper@gmail.com</itunes:email>
        </itunes:owner>
        <itunes:image href="http://kansaspublicradio.org/widgets/podcasts/kpr-presents-logo_3000x3000.png" />
        <itunes:category text="Society &amp; Culture" />
        <itunes:explicit>no</itunes:explicit>

 // load Drupal
define('DRUPAL_ROOT', '/home3/kpr/public_html');
require_once DRUPAL_ROOT . '/includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
date_default_timezone_set('America/Chicago');

 // load the drupal view that does all the sql work for us
$view = views_get_view('podcast_data', true); 
$view->set_display('kpr_presents');
$view->pre_execute();
$view->execute();
 
foreach ($view->result as $item) {
    $node = node_load($item->nid);
 
    // now do stuff with the node
    //print_r($node);
 
    $mp3url = $node->npr_audio[LANGUAGE_NONE][0]['mp3'];
 
    // some things are getting duplicated, need to watch out for that, it's a no no
    if (($mp3url == '') || ($mp3url == NULL)) {
      continue;
    }
 
    echo '<item>'."\r\n";
    echo '    <title>'.check_plain($node->title).'</title>'."\r\n";
    echo '    <itunes:subtitle>This week on KPR Presents...</itunes:subtitle>'."\r\n";
    echo '    <pubDate>'.date("D, d M Y H:i:s",$node->created).' GMT</pubDate>'."\r\n";
    echo '    <itunes:author>Kay McIntyre</itunes:author>'."\r\n";
    echo '    <itunes:summary><![CDATA[ ' . htmlspecialchars($node->body[LANGUAGE_NONE][0]['summary']) . ' ]]></itunes:summary>'."\r\n";
    echo '    <itunes:image href="'.str_replace('/widgets/podcasts', '', file_create_url($node->field_image[LANGUAGE_NONE][0]['uri'])).'" />'."\r\n";
 
    // <enclosure> is the media of the podcast
    // length is the file size in bytes
    $bytes = curl_get_file_size($mp3url);
    echo '    <enclosure url="'.$mp3url.'" length="'.$bytes.'" type="audio/mpeg" />'."\r\n";
 
    $duration = $node->npr_audio[LANGUAGE_NONE][0]["duration"];
    // actually I don't think we NEED to worry about what format it's in, itunes accept either seconds or hh:mm:ss formats.
    //if (!strpos($duration, ':')) {
    //  // if no colon, then it's in seconds. We need to covert it to human readable format.
    //  $duration = gmdate("i:s", $duration);
    //}
    if ($duration == '') $duration = '59:00'; // most KPR Presents shows are 59 minutes long
    echo '    <itunes:duration>'.$duration.'</itunes:duration>'."\r\n";
 
    // guid can just be the url since that's unique
    echo '    <guid>$node->nid.'</guid>'."\r\n";
 
    echo '</item>'."\r\n";   
}