用视频播放器代替YouTube链接

在SO上有很多很多关于重新定义Youtube视频id的问题-只需做谷歌或网站搜索。我冒昧地修改了ridgerrunner的这个答案，以便做你想做的。用嵌入代码替换Youtube URL。如果需要，请查看并编辑模式或嵌入代码。例如，您可能希望将嵌入的视频包装在div .

<?php
// Replace Youtube URLs with embed code
function embedYoutube($text)
{
    $search = '~
        # Match non-linked youtube URL in the wild. (Rev:20130823)
        (?:https?://)?    # Optional scheme.
        (?:[0-9A-Z-]+'.)? # Optional subdomain.
        (?:               # Group host alternatives.
          youtu'.be/      # Either youtu.be,
        | youtube         # or youtube.com or
          (?:-nocookie)?  # youtube-nocookie.com
          '.com           # followed by
          'S*             # Allow anything up to VIDEO_ID,
          [^'w's-]        # but char before ID is non-ID char.
        )                 # End host alternatives.
        (['w-]{11})       # $1: VIDEO_ID is exactly 11 chars.
        (?=[^'w-]|$)      # Assert next char is non-ID or EOS.
        (?!               # Assert URL is not pre-linked.
          [?=&+%'w.-]*    # Allow URL (query) remainder.
          (?:             # Group pre-linked alternatives.
            [''"][^<>]*>  # Either inside a start tag,
          | </a>          # or inside <a> element text contents.
          )               # End recognized pre-linked alts.
        )                 # End negative lookahead assertion.
        [?=&+%'w.-]*      # Consume any URL (query) remainder.
        ~ix';
    $replace = '<object width="425" height="344">
        <param name="movie" value="http://www.youtube.com/v/$1?fs=1"</param>
        <param name="allowFullScreen" value="true"></param>
        <param name="allowScriptAccess" value="always"></param>
        <embed src="http://www.youtube.com/v/$1?fs=1"
            type="application/x-shockwave-flash" allowscriptaccess="always" width="425" height="344">
        </embed>
        </object>';
    return preg_replace($search, $replace, $text);
}
$string = 'This is the forum post content with some Youtube links:'."'n".
    'http://www.youtube.com/watch?v=NLqAF9hrVbY'."'n".
    'http://www.youtube.com/v/u1zgFlCw8Aw?fs=1&hl=en_US';
echo embedYoutube($string);
?>

你不需要手工生成可嵌入的HTML, Youtube支持oEmbed协议:http://oembed.com/#section5

您可以尝试生成玩家代码的小类- http://github.com/chernikovalexey/Livar。我发现它很有趣;)

这是我对Viktor的修改版本

/**
 * Finds youtube videos links and makes them an embed.
 * search: http://www.youtube.com/watch?v=xg7aeOx2VKw
 * search: http://www.youtube.com/embed/vx2u5uUu3DE
 * search: http://youtu.be/xg7aeOx2VKw
 * replace: <iframe width="560" height="315" src="http://www.youtube.com/embed/xg7aeOx2VKw" frameborder="0" allowfullscreen></iframe>
 *
 * @param string
 * @return string
 * @see http://stackoverflow.com/questions/6621809/replace-youtube-link-with-video-player
 * @see http://stackoverflow.com/questions/5830387/how-to-find-all-youtube-video-ids-in-a-string-using-a-regex
 */
function generateVideoEmbeds($text) {
    // No youtube? Not worth processing the text.
    if ((stripos($text, 'youtube.') === false) && (stripos($text, 'youtu.be') === false)) {
        return $text;
    }
    $search = '@          # Match any youtube URL in the wild.
        [^"''](?:https?://)?  # Optional scheme. Either http or https; We want the http thing NOT to be prefixed by a quote -> not embeded yet.
        (?:www'.)?        # Optional www subdomain
        (?:               # Group host alternatives
          youtu'.be/      # Either youtu.be,
        | youtube'.com    # or youtube.com
          (?:             # Group path alternatives
            /embed/       # Either /embed/
          | /v/           # or /v/
          | /watch'?v=    # or /watch'?v=
          )               # End path alternatives.
        )                 # End host alternatives.
        (['w'-]{8,25})    # $1 Allow 8-25 for YouTube id (just in case).
        (?:               # Group unwanted &feature extension
            [&'w-=%]*     # Either &feature=related or any other key/value pairs
        )
        'b                # Anchor end to word boundary.
        @xsi';
    $replace = '<iframe width="560" height="315" src="http://www.youtube.com/embed/$1" frameborder="0" allowfullscreen></iframe>';
    $text = preg_replace($search, $replace, $text);
    return $text;
}

你好，我需要相同的代码，但我的内容得到HTML + YouTube url

所以我更新了reg pattern

private function generateVideoEmbeds($text)
{
    // No youtube? Not worth processing the text.
    if ((stripos($text, 'youtube.') === false) && (stripos($text, 'youtu.be') === false))
    {
        return $text;
    }
    $replace = '<iframe width="560" height="315" src="http://www.youtube.com/embed/$1" frameborder="0" allowfullscreen></iframe>';
    $text = preg_replace("/http:'/'/(www.)?(youtube.com|youtube.be)'/watch'?v=['w]{8,25}[^< ]/si", $replace, $text);
    return $text;
}