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POisset vs try/catch on namespaces
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copied!<p>I'm parsing RSS feeds and have a (sub)function that looks like this:</p> <pre><code>function nSpace($nSp, $type, $i){ $namespaces = $i->getNameSpaces(true); $exp = explode(':', $nSp); try{ $nameSp = $i->children($namespaces[$exp[0]]); $item[$type] = (string)$nameSp->$exp[1]; return $item[$type]; } catch (Exception $e) { } } </code></pre> <p>I'm trying to retrieve the namespace value, and will pass common RSS feed namespaces like "dc:date" or "content:encoded" for example as $nSp. The function works fine should the namespace exist in the XML, however the try{} is producing an 'Undefined Index' error in the first line when it doesn't.</p> <p>Personally I'd rather run an <code>isset($i->children($namespaces[$exp[0]])){}</code> check instead of the try/catch, as I'm more familiar with that workflow, however this doesn't work (get a 'Can't use return value' error).</p> <p>Few questions:</p> <ol> <li>Shouldn't the try{} not produce error messages? </li> <li>Is try/catch the best way? </li> <li>Is there a way to do it with an if() instead? </li> </ol> <p>Thanks.</p> <p>Update: Here is the (abreviated) call/usage for this function:</p> <pre><code>$rawFeed = file_get_contents($url); try { $rss = new SimpleXMLElement($rawFeed); } catch (Exception $e) { } foreach ($rss->channel->item as $i) { $item['link'] = isset($i->link) ? (string)$i->link : nSpace('dc:link', 'link', $i); $item['dateRaw'] = isset($i->pubDate) ? (string)$i->pubDate : nSpace('dc:date', 'date', $i); // etc... } </code></pre>

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