Warning: DOMXPath::query(): Invalid expression

Question

I'm an Xpath newbie. I want to loop through the result of a cURL query and print each element of the only table on the page.

I've used the Xpath plugin for Firefox to obtain my expression and my table is structured as follows:

<table>
<tr class="listItemOneBg">
    <td valign="top">
        SMITH
    </td>
    <td valign="top">
        WILLIAM C C
    </td>
    <td valign="top">
        Male
    </td>
    <td valign="top">

    </td>
    <td valign="top">

    </td>
    <td valign="top">

    </td>
    <td valign="top">

    </td>
    <td valign="top">
        BLACKWOOD
    </td>
    <td valign="top">
        61
    </td>
    <td valign="top">
        1924
    </td>
    <td valign="top">
        <a target="_blank" href='XXX'>
            order</a>
    </td>
</tr>

<tr class="listItemTwoBg">
    <td valign="top">
        SMITH
    </td>
    <td valign="top">
        WILLIAM C PAGE-
    </td>
    <td valign="top">
        Male
    </td>
    <td valign="top">

    </td>
    <td valign="top">

    </td>
    <td valign="top">

    </td>
    <td valign="top">

    </td>
    <td valign="top">
        SWAN
    </td>
    <td valign="top">
        9
    </td>
    <td valign="top">
        1914
    </td>
    <td valign="top">
        <a target="_blank" href='XXY'>
            order</a>
    </td>
</tr>       

Here's the code I've tried so far. I get a message"Warning: Invalid argument supplied for foreach()". What am I doing wrong?

$page = curl_exec($ch);
curl_close($ch);

// Create new PHP DOM document
$dom = new DOMDocument;
// Load html from curl request into document model
@$dom->loadHTML($page);
$xpath = new DOMXPath($dom);

$tableRows = $xpath->query("id('divResults')/table/tbody/tr");
foreach ($tableRows as $row) {
     // fetch all 'tds' inside this 'tr'
    $td = $xpath->query('td', $row);
    echo $td->item(1)->textContent;
}

Answer 1

Assuming the table you're after is actually in a <div id="divResults"> ...

$tableRows = $xpath->query('//div[@id="divResults"]/table/tbody/tr');
foreach ($tableRows as $row) {
    $cells = $row->getElementsByTagName('td');
}

Answer 2

That's a non-standard XPath expression. It cannot work in DOMXPath .
(Downvoters, the expression has been edited since the question was posted. Cheers!)

This is where you learn XPath :

• Microsoft XPath Syntax
• Microsoft XPath by Example

PS : It's where I learnt it.