仅在有此HTML标签的情况下才如何进行匹配？

Question

As shown below in the code, it gets all the matches that have 10 digits and it works great. However I need to filter the matches only with these that are inside this tag

<tr class="main_row pc">

Other numbers are inside this tag (pc is changed to dc)

<tr class="main_row dc">

.

$html= file_get_contents('...');
$matches = array();
preg_match_all('/\d{10}/', $html, $matches);
   foreach ($matches[1] as $match) {
    echo $match.'<br>';
}

How can I filter the numbers?

UPDATE this is the HTML. I want to get the 6914576304 but because there is this tag <tr class="main_row pc">

<tr class="main_row pc">
    <td class="details">
        <a href="./view/4135660/"><span class="p_t">Fiat Cinquecento </span></a>
        <a class="info" href="./view/4135660/">(Info)</a><br>
        <div class="attribs">16345, <span class="p_l">Blue</span>, Phone 6914576304
        </div>
    </td>
</tr>

Answer 1

How about instead of /\\d{10}/ , do:

/<tr class="main_row pc">\d{10}<\/tr>/

You could simplify that too, but I don't know if it's important to you that the number be inside of a tr with both classes specifically or not. Here's some example code and its output:

<?php

$data = '<tr class="main_row pc">0123456789</tr><tr class="main_row pc">1123456789</tr><tr class="main_row dc">2123456789</tr>';

$matches = array();
preg_match_all('/<tr class="main_row pc">\d{10}<\/tr>/', $data, $matches);
print_r($matches);

?>

Output:

Array
(
    [0] => Array
        (
            [0] => <tr class="main_row pc">0123456789</tr>
            [1] => <tr class="main_row pc">1123456789</tr>
        )
)

The first two are matched, the last one is a different class, and is ignored.