title: how to return matches value using preg_replace()
body: <p>please how do that ?</p>
  
  <pre><code>&lt;?php
  $string = '&lt;inc="file.php"&gt;';
  return preg_replace('#&lt;inc\s*="\s*([a-zA-Z0-9\_]+)\"&gt;#',include("$1"),$string);
  ?&gt;
  </code></pre>
  
  <p>the output is return $1</p>
  
  <p>i need to return include file.php</p>