在给定大数据字符串的最后一次斜杠href = value及其alt =值之后如何获取数据？

I have a big string that has mixture of two types of data sets. I want to get the data after the last slash in all href values (for example 168702 and 167504) and its corresponding alt= values (which is episode 29 and episode 20). I tried the following, but I can't get the correct data.

  preg_match_all('/<a  class=\"asite-thumbnail\" href="(.*?)"/s', $code2, $foo);
print_r($foo[1]);

first data set type:

  <a class="asite-thumbnail" href="/season/path/12345/1/168702"><img src="http://asite.image2432424.jpg" alt="Episode 29"><div class="asite-title">Episode 29</div><div class="asite-info">starwar season 2</div></a>

second data set type:

<a class="asite-thumbnail" title="episode 20 start war season 2" href="/season/path/12345/1/167504""><img src="http://asite.com/_thumb_dfsdfsdf.jpg" alt="episode 20">

Here's how you can accomplish this using the domdocument...

$input = '<a class="asite-thumbnail" href="/season/path/12345/1/168702"><img src="http://asite.image2432424.jpg" alt="Episode 29"><div class="asite-title">Episode 29</div><div class="asite-info">starwar season 2</div></a>';
$doc = new DOMDocument();
$doc->loadHTML($input);
$links = $doc->getElementsByTagName('a'); // pull all links
foreach ($links as $link) { //loop through each link
    echo 'End of Link=' . preg_replace('~^.*/~', '', $link->getAttribute('href')) . "
"; //strip down the url to all content after the last /
    $images = $link->getElementsByTagName('img');//get all images in the link
    foreach($images as $image) { //loop through all links
        echo 'Alt attribute = ' . $image->getAttribute('alt') . "
"; // output the alt attributes content
    }
}

Output:

End of Link=168702
Alt attribute = Episode 29

Demo: https://regex101.com/r/eW0zI1/1

... or using both data sets...

$input = '<a class="asite-thumbnail" href="/season/path/12345/1/168702"><img src="http://asite.image2432424.jpg" alt="Episode 29"><div class="asite-title">Episode 29</div><div class="asite-info">starwar season 2</div></a><a class="asite-thumbnail" title="episode 20 start war season 2" href="/season/path/12345/1/167504""><img src="http://asite.com/_thumb_dfsdfsdf.jpg" alt="episode 20">';
$doc = new DOMDocument();
$doc->loadHTML($input);
$links = $doc->getElementsByTagName('a');
foreach ($links as $link) {
    echo 'End of Link=' . preg_replace('~^.*/~', '', $link->getAttribute('href')) . "
";
    $images = $link->getElementsByTagName('img');
    foreach($images as $image) {
        echo 'Alt attribute = ' . $image->getAttribute('alt') . "
";
    }
}

End of Link=168702
Alt attribute = Episode 29
End of Link=167504
Alt attribute = episode 20

Update:

$input = '<a class="asite-thumbnail" href="/season/path/12345/1/168702"><img src="http://asite.image2432424.jpg" alt="Episode 29"><div class="asite-title">Episode 29</div><div class="asite-info">starwar season 2</div></a><a class="asite-thumbnail" title="episode 20 start war season 2" href="/season/path/12345/1/167504"><img src="http://asite.com/_thumb_dfsdfsdf.jpg" alt="episode 20">';
$doc = new DOMDocument();
$doc->loadHTML($input);
$links = $doc->getElementsByTagName('a');
foreach ($links as $link) {
    $linkimage['endlink'][] = preg_replace('~^.*/~', '', $link->getAttribute('href'));
    $images = $link->getElementsByTagName('img');
    foreach($images as $image) {
        $linkimage['alt'][] = $image->getAttribute('alt');
    }
}
print_r($linkimage);

Output:

Array
(
    [endlink] => Array
        (
            [0] => 168702
            [1] => 167504
        )

    [alt] => Array
        (
            [0] => Episode 29
            [1] => episode 20
        )

)