get the all data from a complex rss feed [closed]

Question

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.

Closed 9 years ago.

I want to read and save some data from this rss feed to in my database table. The RSS feed is http://feeds.feedburner.com/TechCrunch/.

I have used the following code before to read another RSS feed:

$homepage = file_get_contents('http://rss.cnn.com/rss/edition_technology.rss');
$homepage = preg_replace("/(<\/?)(\w+):([^>]*>)/", "$1$2$3", $homepage);
$xml = simplexml_load_string($homepage,'SimpleXMLElement', LIBXML_NOCDATA);

echo '<pre>';
print_r($xml);

foreach($xml->channel->item as $opt) {
    $title = mysql_real_escape_string($opt->title);
    $link = mysql_real_escape_string($opt->link);
    $des = mysql_real_escape_string($opt->description);
    // and others
    $sql = 
        "INSERT INTO store_feed (title, link, description) 
         VALUES('$title','$link','$des') 
         ON DUPLICATE KEY UPDATE title = '$title', description = '$des'";
    $result = mysql_query($sql) or die( mysql_error() );
}

... and I got the desired data, but this time data is different.

I want to store link, description, image, publish date, title of this feed. How can I do this?

I know how to insert into a database but how do I get this data from the RSS feed? Please, I need guidance.

Answer 1

When you use simplexml_load_string() on an xml string, you convert it to an object tree.

This XML:

<channel>
  <item>
    <title>Example Title</title>
    <description>Example Description</description>
  </item>
</channel>

... is converted to something you can use like so:

$xml->channel->item->title;
$xml->channel->item->description;

So you need to look at XML of the new RSS feed to see how you can change your code. It will probably look something like this:

foreach($xml->channel->item as $opt) {
    $title = mysql_real_escape_string($opt->title);
    $link = mysql_real_escape_string($opt->link);
    $des = mysql_real_escape_string($opt->description);
    $publication_date = mysql_real_escape_string($opt->pubDate);
    $image = mysql_real_escape_string(strip_tags($opt->description, '<img>'));
}

The image is inside the description, so we can extract it using strip_tags().