title: How to add / into the preg_replace pattern
body: <p>I made this simple function to filter the data. I add the symbols that I allow to be included but I dont know how to add <strong>/</strong> symbol as well</p>
  
  <pre><code>public function filter($text)
    {
       return preg_replace('/[^^a-zA-Z0-9#@:_(),.!@" ]/','',$text);
    }
  </code></pre>