I'm trying to parse the xml output of the PMC API, yet for some reason I get only errors or empty results.. (had no trouble parsing the Pubmed API..)
This is how the XML tools like :
<pmc-articleset>
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" article-type="research-article">
<!--...-->
<front>
<journal-meta>
<journal-id journal-id-type="nlm-ta">Cell Death Differ</journal-id>
<journal-id journal-id-type="iso-abbrev">Cell Death Differ</journal-id>
<journal-title-group>
<journal-title>Cell Death and Differentiation</journal-title>
</journal-title-group>
<issn pub-type="ppub">1350-9047</issn>
<issn pub-type="epub">1476-5403</issn>
<publisher>...</publisher>
</journal-meta>
<article-meta>...</article-meta>
</front>
</article>
</pmc-articleset>
And this is my code:
$xml = simplexml_load_file($query);
$journal_name = (string)$xml->{'pmc-articleset'}->article->front->{'journal-meta'}->{'journal-title-group'}->{'journal-title'};
echo "Title: ".$journal_name;
Any advice would be appreciated!
You are already in the article-set element when you start and $article is an element, not a variable, so the $ should be removed.
echo (string)$xml->article->front->{'journal-meta'}->{'journal-title-group'}->{'journal-title'};