Strip YouTube Embed Code Down to URL Only

问题

Please help!

I need to strip the following code so that it only uses the "value" part

$<object width="360" height="226"><param name="movie" value="http://www.youtube.com/v/IkZuQ-aTIs0"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/IkZuQ-aTIs0" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="360" height="226"></embed></object>

So in this case it would strip it down to http://www.youtube.com/v/IkZuQ-aTIs0

The catch is that this is dynamic so it is pulling these embed codes for different files so they are changing.

Please help :D

回答1:

<?php

$string = '<object width="360" height="226"><param name="movie" value="http://www.youtube.com/v/IkZuQ-aTIs0"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/IkZuQ-aTIs0" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="360" height="226"></embed></object>';

preg_match_all('#http://www.youtube.com/v/([\w\-]+){11}#is', $string, $matches);

print_r( array_unique($matches[0]) );

?>

回答2:

The best way is to use a DOM parser.

http://php.net/manual/en/class.domdocument.php

$doc = new DOMDocument();
$doc->loadHTML('<object width="360" height="226"><param name="movie" value="http://www.youtube.com/v/IkZuQ-aTIs0"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/IkZuQ-aTIs0" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="360" height="226"></embed></object>');

回答3:

$string = '<object width="360" height="226"><param name="movie" value="http://www.youtube.com/v/IkZuQ-aTIs0"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/IkZuQ-aTIs0" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="360" height="226"></embed></object>';

$start = strpos($string, 'value="');
$string = substr($string, $start + 7);
$end = strpos($string, '" ');
$string = substr($string, 0, $end);

echo $string;

little more complex than webartos, but will grab any value, instead of just the youtube link

来源：https://stackoverflow.com/questions/8536787/strip-youtube-embed-code-down-to-url-only