PHP - 数组项的Echo键值

Question

I need to echo the key value of an array.

This is how im outputting my array:

foreach($xml->channel->item as $item) {
  $item->title
}

I've tried adding:

foreach($xml->channel->item as $key => $item)

But the value I echo just comes out as: item

Any ideas?

Var Dump of item results:

var_dump($xml->channel->item);

    object(SimpleXMLElement)#4 (5) { 
["title"]=>  string(33) "BA and union agree to end dispute" 
["description"]=>  string(118) "British Airways and the Unite union reach an agreement which could end the long-running dispute between the two sides." 
["link"]=>  string(61) "http://www.bbc.co.uk/go/rss/int/news/-/news/business-13373638" 
["guid"]=>  string(43) "http://www.bbc.co.uk/news/business-13373638" 
["pubDate"]=>  string(29) "Thu, 12 May 2011 12:33:38 GMT" 
} 

Answer 1

Try doing:

$data = $xml->channel->item;

if (is_object($data) === true)
{
    $data = get_object_vars($data);
}

echo '<pre>';
print_r(array_keys($data));
echo '</pre>';