如何解决php query错误问题

$doc = \phpQuery::newDocumentFile('C:/xampp/htdocs/sae/st/text.htm');
$piclist = pq(".p-cell.cellItem");
foreach ($piclist as $pic) {
 $picurl = pq($pic)->find('.pic img')->attr('src');
 $pictitle = pq($pic)->find('span.cellTit')->html();
 //以下两行会报错 Cannot use object of type DOMElement as array 
 $pic['src'] = $picurl;
 $pic['name'] = $pictitle; 
 //正确的使用方式， 参见 http://www.wallpaperama.com/forums/howto-fix-fatal-error-cannot-use-object-of-type-stdclass-as-array-in-php-t1735.html
 //$pic->name = $pictitle;
 //$pic->src = $picurl;
}