20

如何从以下链接获取 youtube 网址？

<iframe title="YouTube video player" width="640" height="390" 
 src="http://www.youtube.com/embed/VvJ037b_kLs" 
frameborder="0" allowfullscreen></iframe>
4

5 回答 5

50

您可以使用正则表达式和 preg_match 函数

preg_match('/src="([^"]+)"/', $iframe_string, $match);
$url = $match[1];

更新如果您有使用 php 生成的页面或 php 文件中的内联 html，您可以使用缓冲区从 php 中获取 html，然后在其上使用正则表达式：

首先ob_start();在页面代码的开头使用，或者如果您在 php 之前有一些 html，您可以通过添加以下内容将其用于整个页面：

<?php ob_start(); ?>

和 php 文件的开头，然后在最后，您可以在字符串中获取 ob 缓冲区并应用正则表达式：

<?php ob_start(); ?>
<iframe src="foo.bar"></iframe>

<iframe src="baz"></iframe>
<?php

$output = ob_get_contents();
ob_end_clean();

// find all iframes generated by php or that are in html    
preg_match_all('/<iframe[^>]+src="([^"]+)"/', $output, $match);

$urls = $match[1];
echo $output;

?>
于 2013-06-10T06:07:54.043 回答
3 
public function makeiframevideo($url)
{

    // Youtube
    $ytRegExp = "/^(?:https?:\/\/)?(?:www\.)?(?:youtu\.be\/|youtube\.com\/(?:embed\/|v\/|watch\?v=|watch\?.+&v=))((\w|-){11})(?:\S+)?$/";
    preg_match($ytRegExp, $url, $ytMatch);
    if ($ytMatch && strlen($ytMatch[1]) === 11) {
        return "<iframe frameborder=\"0\" allowfullscreen class=\"pull-left\"  id=\"ytplayer\" type=\"text/html\" width=\"100%\" height=\"405\"  src=\"//www.youtube.com/embed/{$ytMatch[1]}?showinfo=0\" ></iframe>";
    }

    // Instagram
    $igRegExp = "/^(?:https?:\/\/)?(?:www\.)?instagram.com\/p\/(.[a-zA-Z0-9\_]*)/";
    preg_match($igRegExp, $url, $igMatch);
    if ($igMatch && strlen($igMatch[0])) {
        return "<iframe frameborder=\"0\" allowfullscreen class=\"pull-left\"  id=\"ytplayer\" type=\"text/html\" width=\"100%\" height=\"405\" src='{$igMatch[0]}/embed/' ></iframe>";
    }

    // Vine
    $vRegExp = "/^(?:https?:\/\/)?(?:www\.)?vine.co\/v\/(.[a-zA-Z0-9]*)/";
    preg_match($vRegExp, $url, $vMatch);
    if ($vMatch && strlen($vMatch[0])) {
        return "<iframe frameborder=\"0\" allowfullscreen class=\"pull-left\"  id=\"ytplayer\" type=\"text/html\" width=\"100%\" height=\"405\" src='{$vMatch[0]}/embed/simple' ></iframe>";
    }

    // Vimeo
    $vimRegExp = " /\/\/(player.)?vimeo.com\/([a-z]*\/)*([0-9]{6,11})[?]?.*/";
    preg_match($vimRegExp, $url, $vimMatch);
    if ($vimMatch && strlen($vimMatch[3])) {
        return "<iframe frameborder=\"0\" allowfullscreen class=\"pull-left\"  id=\"ytplayer\" type=\"text/html\" width=\"100%\" height=\"405\" src='//player.vimeo.com/video/{$vimMatch[3]}' ></iframe>";
    }

    // Dailymotion
    $dmRegExp = "/.+dailymotion.com\/(video|hub)\/([^_]+)[^#]*(#video=([^_&]+))?/";
    preg_match($dmRegExp, $url, $dmMatch);
    if ($dmMatch && strlen($dmMatch[2])) {
        return "<iframe frameborder=\"0\" allowfullscreen class=\"pull-left\"  id=\"ytplayer\" type=\"text/html\" width=\"100%\" height=\"405\" src='//www.dailymotion.com/embed/video/{$dmMatch[2]}' ></iframe>";
    }

    // Youku
    $youkuRegExp = "/\/\/v\.youku\.com\/v_show\/id_(\w+)/";
    preg_match($youkuRegExp, $url, $youkuMatch);
    if ($youkuMatch && strlen($youkuMatch[1])) {
        return "<iframe frameborder=\"0\" allowfullscreen class=\"pull-left\"  id=\"ytplayer\" type=\"text/html\" width=\"100%\" height=\"405\" src='//player.youku.com/embed/{$youkuMatch[1]}' ></iframe>";
    }



    $mp4RegExp = '/^.+.(mp4|m4v)$/';
    preg_match($mp4RegExp, $url, $mp4Match);

    $oggRegExp = '/^.+.(ogg|ogv)$/';
    preg_match($oggRegExp, $url, $oggMatch);

    $webmRegExp = '/^.+.(webm)$/';
    preg_match($webmRegExp, $url, $webmMatch);

    if ($mp4Match || $oggMatch || $webmMatch) {
        return $url;
    }

    return "";
}
于 2016-04-26T22:08:49.227 回答
0 
<?php
function getHtmlElement($html,$startOfElement,$endOfElement)
{
    $startingPosition = strpos($html, $startOfElement);
    $endPosition = strpos($html, $endOfElement,$startingPosition);
    $foundElement = substr($html, $startingPosition,$endPosition);

    return $foundElement;
}

    $html = file_get_contents('http://www.youtube.com/');
    $startOfElement = '<div id="guide"';
    $endOfElement = "<";

    $myElement = getHtmlElement($html,$startOfElement,$endOfElement);

    echo $myElement;

我一直在寻找一种从 url 中获取 html 元素的方法，但我没有找到，所以我写了这个。它的工作原理如示例中所示。获取元素后，您可以应用与我编写的函数相同的逻辑来获取你想要的字符串的一部分。

于 2014-01-28T06:07:37.590 回答
0 
<?php
$url = '<iframe title="YouTube video player" width="640" height="390" src="http://www.youtube.com/embed/VvJ037b_kLs" frameborder="0" allowfullscreen></iframe> ';
$tmpDoc = new DOMDocument();

# Dirty hack to support utf-8 with loadHTML
# http://php.net/manual/en/domdocument.loadhtml.php#95251
@$tmpDoc->loadHTML( '<?xml encoding="UTF-8">' . $url );
foreach ( $tmpDoc->childNodes as $item ) {
    if ( $item->nodeType == XML_PI_NODE ) {
        $tmpDoc->removeChild( $item );// remove hack
    }
}
$tmpDoc->encoding = 'UTF-8'; // insert proper

$body = $tmpDoc->getElementsByTagName( 'body' );

if ( ! $body->length ) {
    return null;
}

$nodes = $body->item( 0 )->childNodes;

if ( empty( $nodes ) ) {
    return null;
}

echo $nodes->item( 0 )->getAttribute( 'src' );
于 2017-05-26T20:48:01.577 回答
0

我的 html 网页代码是：

  <div url="doctor.videoLink"><div class="media-youtube-video">
          <iframe src="https://www.youtube.com/embed/YZvJZrfw5oo?rel=0&amp;enablejsapi=1" frameborder="0" allowfullscreen="" id="widget2"></iframe>
</div> 
</div>

我从iframe中检索src为：

foreach($kolPro->find('div.video div div iframe') as $youTube)
                            {
                                //$kolsData['you_tube']=$youTube->innertext();
                                preg_match('/src="([^"]+)"/', $youTube, $match);
                                $youtubeLink= $match[1];
                            }
于 2017-09-13T12:43:24.623 回答