DOMDocument->；无法从href中提取结果

我已经能够提取给定节点的html

<td class="winner">
                <a href="/jockey/497-g-lee">G Lee</a><br><em><a href="/trainer/3372-r-varian">R Varian </a></em>
            </td>

我想做的是，如果href包含骑师，则提取文本（在这种情况下，结果将是G Lee）。

我通过做以下来做到这一点

@$dom2->loadHTML($trainer);
$xpath2 = new DOMXPath($dom2);
//chekc to see if it had html in it?

$result_rows2 = $xpath2->query('//a[contains(@href, "jockey")]');

note-trainer就是上面发布的html。

现在我对数据做了一个var_dump，得到了这个：

object(DOMNodeList)#12 (1) { ["length"]=> int(1) } object(DOMNodeList)#13 (1) { ["length"]=> int(1) } object(DOMNodeList)#12 (1) { ["length"]=> int(1) } object(DOMNodeList)#13 (1) { ["length"]=> int(1) } object(DOMNodeList)#12 (1) { ["length"]=> int(1) } object(DOMNodeList)#13 (1) { ["length"]=> int(1) } object(DOMNodeList)#12 (1) { ["length"]=> int(1) } im not sure why but its not picking up the results?!?!?

有人能帮忙吗？