title: mysql_real_escape_string not working on different servers
body: <p>I have this strange problem.</p>
  
  <p>I have this script:</p>
  
  <pre><code>echo $comment_content = $_POST['comment_content'];
  echo $comment_content = mysql_real_escape_string($comment_content);
  </code></pre>
  
  <p>When I run it on my website server, it outputs the value only 1 time (not the second one), but when I run it anywhere else, it outputs right (2 times).
  However, I use function <code>mysql_real_escape_string</code> many times (on the same site) and it never happened before.</p>
  
  <p>This is the whole code, nothing more.</p>
  
  <p>Anyone ever had the same problem? If yes, how did you fix it?</p>
  
  <p>edit: the <code>&lt;?php ?&gt;</code> tags also there ofc.</p>