为什么不将这些值作为字符串添加到我的数组中？

$doc = new DOMDocument();
@$doc->loadHTML($html);
$xml = @simplexml_import_dom($doc); // just to make xpath more simple
$images = $xml->xpath(\'//img\');
$sources = array(); 

Array
(
    [0] => SimpleXMLElement Object
        (
            [@attributes] => Array
                (
                    [alt] => techcrunch logo
                    [src] => http://s2.wp.com/wp-content/themes/vip/tctechcrunch/images/logos_small/techcrunch2.png?m=1265111136g
                )

        )
   ...
)

foreach ($images as $i) {   
  array_push($sources, $i[\'src\']);
} 

 echo \"<pre>\";
 print_r($sources);
 die();

Array
(
    [0] => SimpleXMLElement Object
        (
            [0] => http://www.domain.com/someimages.jpg
        )
    ...
)