使用php正則匹配到指定2個字符串之間內容的代碼

<?php
$str = '<div class="player video-ready" id="video-box" log="video-box" data-clog="{&#34;action_name&#34;:&#34;視頻播放框&#34;,&#34;position&#34;:&#34;video-box&#34;}"><video class="video object-fit-cover" id="video-player" poster="https://tx2.a.yximgs.com/upic/2020/06/01/10/BMjAyMDA2MDExMDIyMzNfODczNzMyOTA2XzI5NjcyOTEwMDMxXzFfMw==_low_B414fb6ba4ecd4124149f48bbc60c7e7e.webp?di=7b7d5c0a&#38;bp=10000" width="100%" type="video/mp4" src="https://jsmov2.a.yximgs.com/bs2/newWatermark/Mjk2NzI5MTAwMzE_zh_4.mp4" alt="#街拍 #感謝快手我要上熱門" preload="auto" webkit-playsinline playsinline x5-video-player-fullscreen="false " x5-video-player-type="h5"></video>';

//匹配video

$preg = '/<video[\s\S]*?video>/i';
preg_match_all($preg, $str, $res);

echo "<pre>";
print_r($res[0][0]);

?>

打印出來得到

<pre>Array
(
    [0] => Array
        (
            [0] => <video class="video object-fit-cover" id="video-player" poster="https://tx2.a.yximgs.com/upic/2020/06/01/10/BMjAyMDA2MDExMDIyMzNfODczNzMyOTA2XzI5NjcyOTEwMDMxXzFfMw==_low_B414fb6ba4ecd4124149f48bbc60c7e7e.webp?di=7b7d5c0a&#38;bp=10000" width="100%" type="video/mp4" src="https://jsmov2.a.yximgs.com/bs2/newWatermark/Mjk2NzI5MTAwMzE_zh_4.mp4" alt="#街拍 #感謝快手我要上熱門" preload="auto" webkit-playsinline playsinline x5-video-player-fullscreen="false " x5-video-player-type="h5"></video>
        )
)