Fetch TOCs with the Journal TOCs API and format as HTML

Get data from Journa TOCs

<?php

// Get an ISSN from the querystrin and build a URL for the Journal TOCs API
// http://www.journaltocs.hw.ac.uk/index.php?action=api

$URL = 'http://www.journaltocs.hw.ac.uk/api/journals/' . $_GET['issn'] . '?output=articles';
$xml = simplexml_load_file($URL);

$xml->registerXPathNamespace("rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#"); 
$xml->registerXPathNamespace("prism", "http://prismstandard.org/namespaces/1.2/basic/"); 
$xml->registerXPathNamespace("dc", "http://purl.org/dc/elements/1.1/");
$xml->registerXPathNamespace("mn", "http://usefulinc.com/rss/manifest/");
$xml->registerXPathNamespace("content", "http://purl.org/rss/1.0/modules/content/");

echo('<ul>');

foreach($xml->item as $item) {

  $namespaces = $item->getNameSpaces(true);
  $dc = $item->children($namespaces['dc']);
  
  // Extract the data
  $creator = $dc->creator;
  $link = $item->link;
  $title = $item->title;
  
  // Build the HTML
  echo("<li>$creator: <a href=\"$link\">$title</a></li>");
  
}

echo('</ul>');
  
?>