how can i know the id using php http://elcinema.tv/system/videos/{this id}/sd.flv
<p>for example <a href="http://elcinema.tv/system/videos/1796/sd.flv" rel="nofollow">http://elcinema.tv/system/videos/1796/sd.flv</a>
I want to know what is the id - (1796) using php </p>

<h3>this is the full text:</h3>

<pre><code> &lt;div id="flowplayer" style="display: block; width: 620px; height: 465px;"&gt;&lt;/div&gt;
 &lt;script type="text/javascript"&gt;
  //&lt;![CDATA[
 flowplayer('flowplayer', "flowplayer-3.2.8.swf", {
   clip: {
     autoPlay: true,
     autoBuffering: true,
     onMetaData: function(clip) {
       var w = parseInt(clip.metaData.width);
       var h = parseInt(clip.metaData.height);
       f = document.getElementById('flowplayer');
       f.style.width ='620px';
       f.style.height = '465px';
     }
    },
   playlist: [
    'http://elcinema.tv/system/videos/1796/sd.flv'
   ]
 });
 //]]&gt;
 &lt;/script&gt;  
</code></pre>
