Getting xml:id attribute using SimpleXML in PHP

Question

I have this part of an XML file :

          <post xml:id="cmr-politweets-a445917194569134080" who="#cmr-politweets-p102397481"
        when="2014-03-18T14:38:38" xml:lang="fra">
        <p><distinct type="twitter-retweet"><ident>RT</ident>
            <addressingTerm><addressMarker>@</addressMarker><addressee type="twitter-account"
                ref="https://twitter.com/UDI_off 819772525"
            >UDI_off</addressee></addressingTerm>:</distinct>
              .<addressingTerm><addressMarker>@</addressMarker><addressee type="twitter-account"
              ref="#cmr-politweets-p102397481">Chantal_Jouanno</addressee></addressingTerm> : «
          La lutte contre la pédophilie ne peut fonctionner que par la dénonciation » =&gt; <ref
            target="http://t.co/qVd4gfPfs2 http://bit.ly/1dkQWKu"
          >http://t.co/qVd4gfPfs2</ref></p>
        ..................
      </post>

So, i want to get the xml:id using the simpleXML in PHP. Thanks

Possible duplicate of Parse XML with Namespace using SimpleXML — Calimero
– Calimero, Commented Dec 1, 2015 at 11:02
Your answer is right here php.net/manual/en/book.simplexml.php — André Ferraz
– André Ferraz, Commented Dec 1, 2015 at 11:02
Hi, I tried the Namespaces object but it's give me an error. My problem is to get the value "cmr-politweets-a445917194569134080" from the xml:id attribute. Please help me — medzbakh
– medzbakh, Commented Dec 1, 2015 at 20:37

GGTT · Accepted Answer · 2018-07-04 13:49:28Z

1

Supposing you have only one "xml:" prefixed attribute per element, and it is the xml:id, here is my solution :

function getXMLId(SimpleXMLElement $node) {
        if ($node) {
            if (count($node->attributes('xml', true)) == 1) {
                return $node->attributes('xml', true)[0];
            }
        }
        return '';
    }

answered Jul 4, 2018 at 13:49

GGTT

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1 Comment

Vindic Over a year ago

Indeed the right answer is to use the function attributes on the right node with the second argument to true : $node->attributes('xml', true)

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