我试图从youtube网址输入中获取嵌入代码.我遇到了这个
ANSWER,但现在我将这个答案应用到我的代码中我得不到任何结果.我的目标是让正则表达式将URL设置为:
http://www.youtube.com/watch?v=videoid.我如何能够使用正则表达式函数实际使用我的代码?
<html> <form method="post" action=""> URL: <input type="text" value="<?PHP $text ?>" name="yurl"> <!--$vari--> <br> <!--<br> Height: <input type="text" value="<?PHP $hth ?>" name="yheight"> $hth <br>--> <!--<br> Width: <input type="text" value="<?PHP $wdth ?>" name="ywidth"> $wdth <br> <br>--> Autoplay: <input type="checkBox" value="<?PHP $auto1; $auto2; ?>" name="yautop"> <!--$auto1 $auto2--> <br> <input type="submit" value="Generate Embed Code" name="ysubmit"> <br> </form> </html>
<?PHP $vari =''; if($_POST) { function linkifyYouTubeURLs($vari) { $vari = preg_replace('~ # Match non-linked youtube URL in the wild. (Rev:20111012) https?:// # required scheme. Either http or https. (?:[0-9A-Z-]+\.)? # Optional subdomain. (?: # Group host alternatives. youtu\.be/ # Either youtu.be,| youtube\.com # or youtube.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','<a href="http://www.youtube.com/watch?v=$1">YouTube link: $1</a>',$vari); return $vari; } $vari = $_POST['yurl']; $hth = 300; //$_POST['yheight']; $wdth = 500; //$_POST['ywidth']; $is_auto = 0; $step1 =explode ('v=',$vari); $step2 =explode ('&',$step1[1]); if(isset($_POST['yautop'] )) { if($_POST['yautop'] == 1) $is_auto = 1; } $auto1 = '?autoplay='.$is_auto; $auto2 = '&autoplay='.$is_auto; ?> <p>Iframe Result:</p> <? //Iframe code with optional autoplay echo ('<iframe src="http://www.youtube.com/embed/'.$step2[0].'" frameborder="0" width="'.$wdth.'" height="'.$hth.'"></iframe>'); ?>
解决方法
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