PHP简单HTML DOM-如何通过TD中的特定值查找表？

Question

My table looks like,

<table width="100%" border="0" cellpadding="2" cellspacing="0">
<tr>
<td><strong>NPA/Area Code:</strong></td>
<td><a href="/area-code/area-code-229.asp">229</a></td>
<td><strong>NXX Use Type:</strong></td>
<td>LANDLINE</td>
</tr>
<tr>
<td><strong>NXX/Prefix:</strong></td>
<td>428</td>
<td><strong>NXX Intro Version:</strong></td>
<td>2000-10-31</td>
</tr>
</table>

There are so many tables with no id or class , so finding the one I want is so hard. I am thinking about to use the text in the td to select the table . Is that possible? Because the site I want to scrape data from is coded to be this way. I am unsure how to manipulate the code with Simple HTML DOM, to select this table and then select the text within the td . I know how to extract the value inside td , so the question is how to select this particular table that I want. The link I want to scrape data is, scrape source

Any help is appreciated. Thanks.

Answer 1

I suggest you create a marker for that table, since your trying to get the table below AreaCode/Prefix 229-428 Details , then use that and then point to the next sibling which is that particular table that you want. Example:

$html = file_get_html('http://www.area-codes.com/exchange/exchange.asp?npa=229&nxx=428');
$table = null;
$needle = 'AreaCode/Prefix 229-428 Details';
foreach($html->find('h3') as $marker) {
    if($marker->innertext == $needle) {
        $table = $marker->next_sibling();
        break;
    }
}

$data = array();
if($table) {
    foreach($table->children() as $k => $tr) {
        foreach($tr->children as $td) {
            $data[$k][] = $td->innertext;
        }
    }
}

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

Answer 2

This question might be helpful.

Essentially, you can get the nth element as such:

$table = $html->find('table', 3);

So long as the number of tables doesn't change you can extend that to do what you want.