title: strong word with regex
body: <p>I have this regex:</p>
  
  <pre><code>&lt;?PHP
  $test = 'this is a #test';
  $regex = "#(\#.)#i";
  $test = preg_replace($regex, '&lt;strong&gt;$1&lt;/strong&gt;', $test);
  echo $test;
  ?&gt;
  </code></pre>
  
  <p>and I want the word after # to be in strong, but I only have #t in strong, does anybody have a suggestion?
  thanks a lot</p>