title: preg_match(); - Unknown modifier '+'
body: <p>Alright, so I'm currently working on parsing an RSS feed. I've gotten the data I need no problem, and all I have left is parsing the game title.</p>
  
  <p>Here is the code I currently have (ignore the sloppiness, it is just a proof of concept):</p>
  
  <pre><code>&lt;?php
  $url = 'http://raptr.com/conexion/rss';
  
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
  $result = curl_exec($ch); 
  curl_close($ch);
  
  $xml = new SimpleXMLElement($result);
  
  $lastgame = $xml-&gt;channel-&gt;item[0]-&gt;description;
  preg_match('[a-zA-Z]+&lt;/a&gt;.$', $lastgame, $match);
  
  echo $match;
  ?&gt;
  </code></pre>
  
  <p>Everything was working great, but then I started getting this error:</p>
  
  <pre><code>Warning: preg_match() [function.preg-match]: 
  Unknown modifier '+' in raptr.php on line 14
  </code></pre>
  
  <p>The only thing I have left is to strip out the closing anchor tag and the period, but I can't seem to figure out why it isn't liking the '+'. Any ideas?</p>
  
  <p>Edit: This should not be marked as a duplicate as it was asked two years before the other question.</p>