How to get child element of DOMDocument - php

Question

Trying to get the specific value from a table with tr and td elements...
HTML:
<table>
<tr>
<td>value1</td>
<td>value2</td>
<td>value3</td>
</tr>
</table>
PHP:
$html = 'http://www.example.com'; // edited
$dom = new DOMDocument;
#$dom->loadHTML($html);
$data = $dom->getElementsByTagName('tr:nth-child(3n)');
foreach ($data as $datas){
echo $link->nodeValue;
}
Using such or different approach, how to get the value of specific td element... ?

Answer 1

Using getElementsByTagName() returns a list of the tags based on your starting point, so once you've found the table, you can then use the same function to get the <td> tags. You can then just pick out the elements your after...
$data = "<table>
<tr>
<td>value1</td>
<td>value2</td>
<td>value3</td>
</tr>
</table>";
$dom = new DOMDocument;
$dom->loadHTML($data);
$table = $dom->getElementsByTagName('table');
$td = $table[0]->getElementsByTagName('td'); // Fetch all td elements in the first table
echo $td[2]->nodeValue; // Echo out the value of the 3rd item (zero based arrays)
Prints out..
value3

Answer 2

xPath can be used to get particular element. Try the following code to get 3rd td value from given html.
$html = '<table>
<tr>
<td>value1</td>
<td>value2</td>
<td>value3</td>
</tr>
</table>';
$dom = new DOMDocument;
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$table = $dom->getElementsByTagName('table')->item(0);
$query = 'tr/td[3]';
$entries = $xpath->query($query, $table);
echo $entries[0]->nodeValue;
Read about DOMXpath query()
Update: Use of file_get_content is also simple, you can retrieve html/xml as string in $html variable and rest of the process is same:
$html = file_get_contents("path/to/file/x.html"); // target path

Answer 3

I think this should help you.
Just assign class Name for td elements and then use this
for eg:
<td class="two">value2</td>
$(this).closest('tr').children('td.two').text();